# Past Events

### Dynamics Seminar-Gibbs measures (III)

This meeting will be Friday, October 16, 2pm to 3 pm on Zoom

Speaker: Lien-Yung (Nyima) Kao, GWU

Title: Gibbs measures (III)

### Topology Seminar- Quantum trace map for SL_n skein algebras of surfaces

The next talk in the Greater Washington Area on Friday, October 16 from **1pm to 2pm EDT and will be held virtually via Zoom**.

### Computability Seminar MSRI program on DDC-Effectiveness aspects of Hindman’s Theorem

Computability Seminar MSRI program on DDC

Organizer: V. Harizanov

For link contact [email protected]

### General (Main) Seminar MSRI program on DDC- Residue rings of models of Peano Arithmetic

Organizer: V. Harizanov and A. Shlapentokh

### Dynamics Seminar-Markov interval maps and almost Anosov flows

This meeting will be Friday, October 9, 2pm to 3 pm on Zoom

Title: Markov interval maps and almost Anosov flows

Speaker: Robbie Robinson, GWU

### Topology Seminar- Coordinatizing isotopy classes of webs in surfaces

The next talk in the Greater Washington Area on Friday, October 9 from 1pm to 2pm EDT and will be held virtually via Zoom.

### General (Main) Seminar MSRI program on DDC-Effective ultrapowers

General (Main) Seminar MSRI program on DDC

Organizer: A. Shlapentokh

For link contact [email protected]

### Computability Seminar MSRI program on DDC-Milliken's tree theorem and computability theory

Organizer: V. Harizanov

For link contact [email protected]

Thursday, October 8, 12:00-1:00 on Zoom

### Dynamics Seminar-Gibbs measures (II)

This meeting will be Friday, October 2, 2pm to 3 pm on Zoom.

Speaker: Prof. Lien-Yung (Nyima) Kao, GWU

Title: Gibbs measures (II)

### Topology Seminar-Trivalent Graphs and Virtual Links

The Greater (George) Washington Topology Seminar will be starting next week. This seminar is meant for students and faculty who work at universities in the Greater Washington Area and are inte

### Computability Seminar MSRI program on DDC- Generically computable structures

Organizer: V. Harizanov

For link contact [email protected]

Friday, October 2, 12:00-1:00 on Zoom

### General (Main) Seminar MSRI program on DDC-(Z,+) has a Borel complete reduct

Organizers: A. Shlapentokh and V. Harizanov

For link contact [email protected]

Thursday, October 1, 12:00-1:00 on Zoom

### Applied Math Seminar-Solving and learning phase field models using the modified Physics Informed Neural Networks

Yanxiang Zhao is inviting you to a scheduled Zoom meeting.

Topic: Applied Math Seminar

Time: Sep 25, 2020 02:00 PM /Eastern Time (US and Canada)

### Dynamics seminar-Introduction to Entropy

The second meeting will be Friday, September 25, , 2 to 3 pm on Zoom.

Speaker: Prof. Robbie Robinson, GWU

Title: Introduction to Entropy

### General (Main) Seminar MSRI program on DDC-Diophantine stability and unsolvability

Organizers: A. Shlapentokh and V. Harizanov

For link contact [email protected]

Friday, September 25, 12:00-1:00 on Zoom

### Computability Seminar MSRI program on DDC-Effective coding and decoding in classes of structures

Organizer: V. Harizanov

### Dynamics Seminar-Gibbs measures (I)

The form meeting of the Fall dynamics seminar will take place (next) Friday, September 18, 2 to 3 pm on Zoom.

Speaker: Prof. Nyima Kao, GWU

Title: Gibbs measures (I)

### Computability Seminar MSRI program on DDC-Effective ringed spaces and Turing degrees of isomorphism types

Organizer: V. Harizanov

For link contact [email protected]

Friday, September 18, 12:00-1:00 on Zoom

### General (Main) Seminar MSRI program on DDC-Diophantine stability

General (Main) Seminar MSRI program on DDC

Organizers: A. Shlapentokh and V. Harizanov

For link contact [email protected]

### Colloquium: A Quantum computer based on trapped ions

**Title**: A Quantum computer based on trapped ions

### University Seminar: Logic Across Disciplines- The tree method for priority arguments

**Title:** The tree method for priority arguments**Speaker:** Valentina Harizanov, GWU

### Colloquium: Alexandra Shlapentokh

**Speaker:** Alexandra Shlapentokh, East Carolina University

### Colloquium: A problem with a sense of humor

Speaker: Alexandra Shlapentokh, East Carolina University

### Combinatorics Seminar-Generating functions for induced characters of the hyperoctahedral group

Speaker: MarkSkandera, Lehigh University

Date and time: Wednesday, February 19, 4:00–5:00pm

Place: Rome 204

### Uninversity Seminar: Logic Across Disciplines -Standard and nonstandard models

**Title:** Standard and nonstandard models

### Machine Learning Student Seminar-High-Performance Deep Learning Classification for Radio Signals

**Title:** High-Performance Deep Learning Classification for Radio Signals**Speaker:** William Haftel

### University Seminar: Logic Across Disciplines- On computable fields of reals and some applications

**Title:** On computable fields of reals and some applications

### University Seminar: Logic Across Disciplines- On Sigma preorderings in HF(R)

**Title:** On Sigma preorderings in HF(R)

### Knots in Washington conferences

KNOTS in Washington XLIX

In memory of Mark Kidwell (1948–2019)

February 7–9, 2020

### Colloqiuim-In praise of diagrams

**Title:** In praise of diagrams

### Topology Seminar- Complexity of computing Khovanov homology of closed n-braids

Speaker:Marithania Silvero (Universidad de Huelva, Spain)

### University Seminar: Logic Across Disciplines- The tree method for priority arguments

**Title:** The tree method for priority arguments**Speaker:** Valentina Harizanov, GWU

### Topology Seminar- Normalized Yang-Baxter homology and biquandle homotopy invariants

Speaker:Xiao Wang (Jilin University, Changchun, China)

### Undergraduate Student Seminar-Characterizing 3-Break Genome Rearrangements

### Graduate Student Seminar-A hierarchy of matroid invariants and a new matroid construction

Speaker: Kevin Long, GWU

### University Seminar: Logic Across Disciplines- Computing VC-density

**Title:** Computing VC-density

### Combinatorics Seminar- Counting real conjugacy classes with generating functions

Speaker:C. Ryan Vinroot, William & Mary

Date and time: Thursday, November 21, 2:15–3:15pm

Place: Phillips 110

### Applied Math-Physically-based modeling for a virtual laboratory in Science and Engineering

Title: Physically-based modeling for a virtual laboratory in Science and Engineering

Speaker:Giovanna Guidoboni, PhD

### Colloqiuim-The dimension of a partial order

**Title:** The dimension of a partial order

### University Seminar: Logic Across Disciplines- Building models of strongly minimal theories

**Title:** Building models of strongly minimal theories

### Combinatorics Seminar- The Free Cone and its relation to matroid invariants

Speaker: Kevin Long, GWU

Date and time: Thursday, November 14, 2:15–3:15pm

Place: Phillips 110

Title: The Free Cone and its relation to matroid invariants

### Combinatorics Seminar- Trees, Leafs, Logs, Palindromes, and the Riordan Group

Speaker: Lou Shapiro, Howard

Date and time: Thursday, November 7, 2:15–3:15pm

Place: Phillips 110

Title: Trees, Leafs, Logs, Palindromes, and the Riordan Group

### University Seminar: Logic Across Disciplines- Isomorphism problem

**Title:** Isomorphism problem

### Combinatorics Seminar- Graphs and binary matroids whose odd circuits all have size three or five

Title: Graphs and binary matroids whose odd circuits all have size three or five

Speaker: Carolyn Chun, USNA

Date and time: Tuesday, October 29, 1–2pm

Place: Phillips 110

### Combinatorics Seminar-K-Nearest Neighbor Approximation Via the Friend-of-a-Friend Principle

Speaker: Richard W.R. Darling, Math Research Group, NSA

### Combinatorics Seminar-Equations for Matroid Varieties

Title: Equations for Matroid Varieties

Speaker: Will Traves, USNA

Date and time: Thursday, October 17, 2:15–3:15pm

Place: Phillips 110

### University Seminar: Logic Across Disciplines-Markov properties

**Title:** Markov properties**Speaker:** Iva Bilanovic, GWU**Date and time:** Friday, October 11, 11:00am-12 noon

### Special Lecture - Mathematics: The Foundation of Impactful and Exciting Careers

### Combinatorics Seminar- Divided symmetrization and Schubert polynomials

Speaker: Vasu Tewari, UPenn

Date and time: Thursday, October 10, 2:15–3:15pm

Place: Phillips 110

### Applied Mathematics Seminar-Periodic Minimizers of a Ternary Non-Local Isoperimetric Problem

Title: Periodic Minimizers of a Ternary Non-Local Isoperimetric Problem

Speaker:Chong Wang

Affiliation: McMaster University

### University Seminar: Logic Across Disciplines-Motivating and characterizing large cardinals

**Title:** Motivating and characterizing large cardinals**Speaker:** Philip White, GWU**Date and time:** Friday, October 4, 11:00am-12 noon

### Combinatorics- Multiple Zeta Values, Iterated Integrals, and Labeled Posets

Title: Multiple Zeta Values, Iterated Integrals, and Labeled Posets

Speaker: Michael Hoffman, USNA

Date and time: Thursday, October 3, 2:15–3:15pm

Place: Phillips 110

### Uninversity Seminar: Logic Across Disciplines - Forcing, an introduction

**Title:** Forcing, an introduction**Speaker**: Philip White, GWU**Date and time:** Friday, September 27, 11:00am-12 noon

### Combinatorics Seminar-Doubly weighted rooted trees and computer networks

Date and time: Thursday, September 26, 2:15–3:15pm

### Applied Mathematics Seminar-Boundary operator associated to $\sigma_k$ curvature

Title: Boundary operator associated to $\sigma_k$ curvature

Speaker: Yi Wang

Affiliation: Johns Hopkins University

### Graduate Student Seminar-Methods of interpolation between two dual quaternions

Speaker: Dionne Ibarra

Date and Time: Friday, September 20, 3:00PM-4:00PM

### University Seminar: Logic Across Disciplines-Gram determinants and Temperley-Lieb algebras

## Logic-Topology Seminar

### University Seminar: Logic Across Disciplines-Can you always raise a natural number to a power? (Part 2)

**Title:**

### Combinatorics-The natural matroid of a polymatroid

Title: The natural matroid of a polymatroid

Speaker: Joe Bonin, GWU

Date and time: Thursday, September 12, 2:15–3:15pm

Place: Phillips 110

### University Seminar: Logic Across Disciplines-Can you always raise a natural number to a power?

**Title:**Can you always raise a natural number to a power?

**Speaker:**Keshav Srinivasan, GWU

### Combinatorics-Counting reflections in complex reflection groups

### Combinatorics Seminar- Using the Potential Method to Color Near-Bipartite Graphs

### Combinatorics Seminar- Plabic R-Matrices

### Topology Seminar-Quantum Computing- Coloring, gadgets and the Kochen-Specker theorem,

### Colloqiuim- Matroids and the combinatorics of matrix rank

### Dynamical Systems Seminar- a proof of Champernowne's theorem.

### Graduate Student Seminar: Careers in Industry Panel

### University Seminar: Logic Across Disciplines-Cohesive Powers: Structures in General and Linear Orders

**Title:**Cohesive Powers: Structures in General and Linear Orders

### Combinatorics Seminar: Two problems regarding primitive sets of integers

### Graduate Student Seminar

**Title:**TBA

**Speakers**: Pavel Avdeev

**Date and Time**: Friday, April 12, 2-3PM

### Undergraduate Seminar/Pi Mu Epsilon talk/Finding Ellipses

Date and time: Friday, April 5, 4-5 p.m.

Place: Duques Hall, Room 152

Title: Finding Ellipses

### Colloqiuim-A Quantum computer based on trapped ions

**Title:** A Quantum computer based on trapped ions

### Combinatorics Seminar- On the Intersection Numbers of Finite Groups

Speaker: Lindsey-Kay Lauderdale, Towson

Date and time: Thursday, April 4, 4-5pm

Place: Rome 352

### Colloqiuim- "The multiple personalities of knots and 3-manifolds"/Distinguished Speculative First of April Talk

Math Department Colloquium -- **Distinguished ****Speculative**** First of ****April**

### Graduate Student Seminar

### University Seminar: Logic Across Disciplines- The Rigour of Proof

**Title:**The Rigour of Proof

### Dynamical Systems Seminar-Billiards in polygons and related dynamical systems

**Title**: Billiards in polygons and related dynamical systems

**Speaker:**Robbie Robinson, GWU

**Date and Time:**Frida

### Combinatorics Seminar- Quadrangulated Immersions of Cubic Graphs in the Sphere

Title: Quadrangulated Immersions of Cubic Graphs in the Sphere

Speaker: Lowell Abrams, GWU

Date and time: Thursday, March 28, 4–5pm

Place: Rome 352

### Graduate Student Seminar: “Gram determinants motivated by Knot Theory”

Title: “Gram determinants motivated by Knot Theory”

### Dynamical Systems Seminar: Invariant measures, matching and the frequency of 0 for sighted binary expansions

**Title**: Invariant measures, matching and the frequency of 0 for sighted binary expansions.

**Speaker:**Karma Dajani, University of Utrecht, The N

### Combinatorics Seminar-Quadrangulated Immersions of Cubic Graphs in the Sphere

Title: Quadrangulated Immersions of Cubic Graphs in the Sphere

Speaker: Lowell Abrams, GWU

Date and time: Thursday, March 7, 4–5pm

Place: Rome 352

### Applied Mathematics Seminar-The Mathematical Structure of Diabetes on a Slow Manifold

Title: The Mathematical Structure of Diabetes on a Slow Manifold

Speaker: Dr. Joon Ha

Affiliation: NIH and GWU

### Graduate Student Seminar- Index sets, decision problems, and classes of (somewhat) computable groups

**Title**:Index sets, decision problems, and classes of (somewhat) computable groups

### Dynamical Systems Seminar- Billiards in Polygons and related dynamical systems

**Title**: Billiards in Polygons and related dynamical systems

**Speaker:**Robbie Robinson & participants

**Date and Time:**

### Combinatorics Seminar- Patterns in Random Permutations

Speaker: Chaim Even Zohar, UC Davis

Date and time: Monday, February 25, 4-5pm

Place: Rome 206

Title: Patterns in Random Permutations

### Applied Mathematics Seminar-Nonparametric inference of interaction laws in systems of agents from trajectory data

Title: Nonparametric inference of interaction laws in systems of agents from trajectory data

### Colloqiuim- Coloring knot diagrams and quandles

### University Seminar: Logic Across Disciplines- Measuring Complexity in Computable Structure Theory

**Title:**Measuring Complexity in Computable Structure Theory

**Speaker:**Valentina Harizanov, GWU

### Dynamical Systems Seminar- Introduction to billiards

**Title**: Introduction to billiards

**Speaker:**Robbie Robinson, GWU Math

**Date and Time:**Friday, February 22n

### Dynamical Systems Seminar-On Penrose tilings and tiling dynamical systems: VI

**Title**: On Penrose tilings and tiling dynamical systems: VI

**Speaker:**Robbie Robinson, GWU Math

**Date and Time:**

### Combinatorics Seminar- Does Every Infinite Geometric Lattice of Finite Rank Have a Matching? A "Challenging Question" of Björner from 1976

Speaker: Jonathan David Farley, Morgan State University

Date and time: Thursday, February 14, 4-5pm

Place: Rome 352

### Dynamical Systems Seminar-On Penrose tilings and tiling dynamical systems: III

**Title**: On Penrose tilings and tiling dynamical systems: III

**Speaker:**Robbie Robinson, GWU Math

**Date and Time:**

### Undergraduate Student Seminar-What do lattice paths have to do with matrices, and what is beyond both?

Speaker: Joseph Bonin, GWU

### University Seminar: Logic Across Disciplines-Computability via definability and polynomial computability

**Title:**Computability via definability and polynomial computability

**Speaker:**Sergei Goncharov, Russian Academy of Sciences

### Applied Mathematics Seminar-Regularized decovolution for antenna array

Title: Regularized decovolution for antenna array

Speaker: Debdeep Bhattacharya, GWU

### Graduate Student Seminar- How to get your math paper published

**Title**:How to get your math paper published

### University Seminar: Logic Across Disciplines- Fraisse limits, ages, and computability

**Title:**Fraisse limits, ages, and computability

**Speaker:**Valentina Harizanov, GWU

### Dynamical Systems Seminar- On Penrose tilings and tiling dynamical systems: II

Title: On Penrose tilings and tiling dynamical systems: II

Speaker: Robbie Robinson

Date and time: Friday, February 1, 9-10:15am

Place: Phillips736

### Combinatorics Seminar- Helly-type results on support lines for families of convex ovals

Speaker: Valeriu Soltan, George Mason University

Date and time: Thursday, January 31, 4-5pm

Place: Rome 352

Title: Helly-type results on support lines for families of convex ovals

### Dynamical Systems Seminar- On Penrose tilings and tiling dynamical systems: I

### Combinatorics Seminar-Stanley-Reisner rings of symmetric simplicial complexes

Speaker: Emanuele Delucchi, University of Fribourg

Date and time: Thursday, January 24, 4-5pm

Place: Rome 352

Title: Stanley-Reisner rings of symmetric simplicial complexes

### Topology Seminar- Quasipositive braids and plane real or complex curves

Speaker:Stepan Orevkov (IMT, Universite Paul Sabatier, Toulouse France)

### Knots in Washington XLVII

### Applied Mathematics Seminar-Primal-Dual Weak Galerkin Finite Element Methods for PDEs Title: Primal-Dual Weak Galerkin Finite Element Methods for PDEs(RESCHEDULED FOR TUESDAY JANUARY 15, 2019 FROM 11AM-12PM DUE TO SNOW DAY ON MONDAY)

Title: Primal-Dual Weak Galerkin Finite Element Methods for PDEs

Speaker: Chunmei Wang

### Combinatorics Seminar- On Riordan graphs

Speaker: Gi-Sang Cheon, Sungkyunkwan University

Date and time: Monday, January 14, 4-5pm

Place: Rome 206

Title: On Riordan graphs

### Applied Mathematics Seminar-Primal-Dual Weak Galerkin Finite Element Methods for PDEs

Title: Primal-Dual Weak Galerkin Finite Element Methods for PDEs

Speaker: Chunmei Wang

### Graduate Student Seminar-Caculus Lab and Teaching Recitations

**Title:** Calc Lab and Teaching Recitations

### Applied Mathematics Seminar-The synchronization problem for Kuramoto oscillators and beyond

Title: The synchronization problem for Kuramoto oscillators and beyond

Speaker: Javier Morales

### University Seminar: Logic Across Disciplines- Homotopy Type Theory, the confluence of logic and space

**Title:**Homotopy Type Theory, the confluence of logic and space

### Colloqiuim-Parametrization of simple closed curves on surfaces.

### Applied Mathematics Seminar-Ginzburg-Landau Model of Superconductivity with Prescribed Topological Degrees

Title: Ginzburg-Landau Model of Superconductivity with Prescribed Topological Degrees

### Dynamical Systems Seminar-See Abstract

### Dynamical Systems Seminar-Quantization and Shrinking Targets for Dynamical Systems

### Graduate Student Seminar- Khovanov homology and the PS braid conjecture

**Title**:Khovanov homology and the PS braid conjecture

### Combinatorics Seminar-Random Monomial Ideals

Speaker: Jesus De Loera, UC Davis

### Jump Seminar-Research Opportunities for GW Undergraduates

**Title: **Research Opportunities for GW Undergraduates**Speaker:** Multiple GW faculty / students will speak

### Colloqiuim- Computable Mathematics and Reverse Mathematics

### Dynamical Systems Seminar-The Furstenberg Structure Theorem

### Combinatorics Seminar- Permuted Packings and Permutation Breadth

Speaker: Cheyne Homberger, UMBC

### Graduate Student Seminar-Research Interests

**Speakers**: Valentina Harizanov, Xiaofeng Ren, GWU

**Date and Time**: Friday,

### University Seminar: Logic Across Disciplines- Relatively C-categorical structures

**Title:**Relatively C-categorical structures

**Speaker:**Valentina Harizanov, GWU

### Dynamical Systems Seminar- “On the construction of a Minkowski number.”

### Topology Seminar- Even complexes have a spherical basis

Speaker: Paul Kainen (Georgetown University)

### Combinatorics Seminar- Searching for Trialities of Embedded Graphs

Speaker: Lowell Abrams, GWU

Date and time: Thursday, November 1, 4-5pm

### Graduate Student Seminar-Research Interests

**Title**:give us an idea of their research interests

### University Seminar: Logic Across Disciplines- Limit computably categorical structures

**Title:** Limit computably categorical structures

### Dynamical Systems Seminar-Dynamics of the geodesic and horocycle flows.

### Combinatorics Seminar- Involutions and pseudo-involutions in the Riordan group

Speaker: Alex Burstein, Howard University

### Topology Seminar-"Dijkgraaf-Witten invariants and Pachner moves"

Speaker: Takefumi Nosaka (Tokyo Institute of Technology)

### University Seminars: Logic Across Disciplines-Computability and definability

**Title:** *Computability and definability*

### Dynamical Systems Seminar-Dynamics of the geodesic and horocycle flows. CANCELLED THIS WEEK!

### Combinatorics Seminar-Injective Proofs of the Erdos-Ko-Rado and Hilton-Milner Theorems Speaker: GlennHurlbert, VCU

Speaker: GlennHurlbert, VCU

### Jump Seminar-Probability Paradoxes

**Title: **Probability Paradoxes**Speaker: **Professor Dan Ullman, GW Math Department.

### University Seminar: Logic Across Disciplines-Degree Structure of Effective Boolean Algebras

**Title:** *Degree Structure of Effective Boolean Algebras*

### Dynamical Systems Seminar-Geodesics and horocycles on a surface of constant negative curvature; the geodesic and horocycle flows.

### Combinatorics Seminars-Counting partitions, Dynkin diagrams, quantum dilogarithms, and generalizations

### Combinatorics Seminars-Affine evacuation

Speaker: Joel Brewster Lewis, GWU

### Graduate Student Seminar- Utilizing Mathematica, Wolfram|Alpha, and other Wolfram technologies for teaching and research

### University Seminar: Logic Across Disciplines-The Algorithmic Complexity of Detecting Group Properties

**Title:** *The Algorithmic Complexity of Detecting Group Properties***Speaker:** Iva Bilanovic, GWU, GWU

### Dynamical Systems Seminar-Geodesic flows on flat and hyperbolic surfaces

Title: Geodesic flows on flat and hyperbolic surfaces

Speaker: Robbie Robinson and participants

### Combinatorics Seminars-The local limit of the fixed-point forest

Speaker: Erik Slivken, Paris VII

### University Seminar: Logic Across Disciplines- Multiplying Fractions in a Topological Way

**Title:** Multiplying Fractions in a Topological Way

### Dynamical Systems Seminar-Utilizing Mathematical, Wolfram|Alpha, and other Wolfram technologies for teaching and research

**Title**

### Combinatorics Seminar- A proof of the strict monotone 5-step conjecture

Speaker: Walter Morris, George Mason University

### Dynamical Systems Seminar-Hyperbolic Geometry, Dynamics and Continued Fractions.

**Title**

### Combinatorics Seminar-Zero Forcing: Minimum Rank Problems, Sample Error, Combinatorial Optimization, and More.

Speaker: Franklin Kenter, US Naval Academy

### University Seminars:Logic Across Disciplines-Decision Problems and Groups

**Title:** Decision Problems and Groups**Speaker:** Iva Bilanovic, GWU

### Dynamical Systems Seminar-three short presentations on background material

**Moderator:**

### Combinatorics- Presentations and Extensions of Transversal Matroids

Speaker: J. Bonin, GWU

Title: Presentations and Extensions of Transversal Matroids

### Dyamical Systems Seminar-Introduction geodesic flows on hyperbolic and translation surfaces.

**Title**

### Special Colloquium-Visibility based sensor placement for learning a priori unknown environments

**Speaker:**Yen-Hsi Richard Tsai, Department of Mathematics, Center for Numerical Analysis, Institute for Computational Engineering and Sciences, University of Texas at Austin

### End of Semester Celebration

### Topology Seminar- The geometry of quivers

Speaker: Ben Wormleighton, UC Berkeley

Date and time: Tuesday, May 8, 5:30--6:30pm

Place: Phillips Hall 730

### Colloquium- opening of Knots in Washington

**Title:** On real algebraic knots and links in RP^3

**Speaker:** Stepan Orevkov, the University of Toulouse, France

### Graduate Student Seminar- Scattering in generalized Hartree equation

### University Seminars:Logic Across Disciplines-Working seminar about developing a formal system representing reasoning in chemistry

**Title**:Working seminar about developing a formal system representing reasoning in chemistry

### University Seminars:Logic Across Disciplines-Scott Ranks of Scattered Linear Orders

**Title**:*Scott Ranks of Scattered Linear Orders***Speaker: **Rachael Alvir, University of Notre Dame

### Combinatorics-Matroids from Graphs and Graphs from Matroids

Speaker: Deborah Chun, West Virginia University Institute of Technology

Date and time: Tuesday, April 24, 1-2pm

### Special Colloquium-Blow up for the critical Zakharov-Kuznetsov equation

### Conference -"Nonlinear phenomena in Washington DC"

### Colloquium-Microstructure and Herglotz functions

**Title:** Microstructure and Herglotz functions

**Speaker:** Miao-Jung Ou, NSF

### Graduate Student Seminar-Mathematical Models for Genome Rearrangements and Whole Genome Duplications

### Colloquium-Matrices, models, and geometry

**Title:** Matrices, models, and geometry

### Combinatorics-Cycles in sparse graphs

Speaker: Felix Lazebnik, University of Delaware

Date and time: Tuesday, April 17, 1-2pm

Place: Rome 771

### Graduate Student Seminar-Analysis and Modeling of Self-organized Systems with Long Range Interaction

### Combinatorics-Local and global degree profiles of randomly grown self-similar hooking networks under uniform and preferential attachment

Speaker: Hosam Mahmoud, GW Department of Statistics

Date and time: Tuesday, April 10, 1-2pm

Place: Rome 771

### Graduate Student Seminar-Computability-Theoretic Properties of Orders and Complexity of Identifying Algebraic Properties on Computable Magmas

### Undergraduate Seminar/Pi Mu Epsilon talk-A friendly introduction to slow-fast systems and their importance in mathematical neuroscience.

Undergraduate Seminar/Pi Mu Epsilon talk

Speaker: Stan Mintchev

### Colloquium-Topology with complicated points

### Applied Math Seminar- Signal transmission properties of unidirectional chains of phase oscillators.

Title: Signal transmission properties of unidirectional chains of phase oscillators.

Speaker: Stan Mintchev

Affiliation: Cooper Union

### Topology Seminar - Planar Hyperbolic Geometry

Speaker: Norbert A'Campo (University of Basel)

Title: Planar Hyperbolic Geometry.

Time: April 5 (Thursday) 5:30-6:30 pm

Place. Seminar Room (Phillips 730)

### Applied Math Seminar- Existence of positive solutions with a prescribed singular set for fractional Yamabe Problem

Title: Existence of positive solutions with a prescribed singular set for fractional Yamabe Problem

Speaker: Weiwei Ao (Wuhan University, China)

### Combinatorics-Spectral characterization of graphs

Speaker: Sebastian Cioaba, University of Delaware

Date and time: Tuesday, April 3, 1-2pm

Place: Rome 771

### Graduate Student Seminar - From the Tutte Polynomial to the G-invariant

### University Seminars:Logic Across Disciplines-Detecting Nilpotence in Classes of Groups

**Title**:*Detecting Nilpotence in Classes of Groups***Speaker: **Iva Bilanovic, GWU

### Combinatorics- Partitioning the Rainbow

Speaker: Kendra E. Pleasant, Morgan State University

Date and time: Tuesday, March 27, 1-2pm

Place: Rome 771

### Applied Math Seminar- Sobolev regularity for first order Mean Field Games

Title: Sobolev regularity for first order Mean Field Games

Speaker: Jameson Graber (Baylor University)

Date and Time: Monday, March 26, 5:00pm-6:00pm

Place: Monroe 113

### Q and A on the Data MASTER Scholarship (this is the reschedule date of the event, which was cancelled due to the GW closure)

### Colloquium-Detecting properties from descriptions of groups

**Title:** Detecting properties from descriptions of groups

**Speaker:** Jennifer Chubb, University of San Francisco and GWU

### University Seminars:Logic Across Disciplines-Structural Properties of Spectra and Omega-Spectra

**Title**: Structural Properties of Spectra and Omega-Spectra**Speaker:**Alexandra Soskova, Sofia University, Bulgaria

### Topology Seminar- New Khovanov homotopy types

**Titl****e:** New Khovanov homotopy types**Speaker:** Marithania Silvero (University of Barcelona)

### Applied Math Seminar- Traveling Wave of Gray-Scott system, Existence, Multiplicity and Stability

Title: Traveling Wave of Gray-Scott system, Existence, Multiplicity and Stability

Speaker: Yuanwei Qi

Affiliation: University of Central Florida

### Combinatorics-Coloring Squares of Planar Graphs

Speaker: Dan Cranston, Virginia Commonwealth University

Date and time: Tuesday, March 6, 1-2pm

Place: Rome 771

### Graduate Student Seminar-Multiplying fractions on a T-shirt

### Colloquium-Introduction to K-theory and flag manifolds

**Title:** Introduction to K-the

### Topology Seminar- On SL(2,C) Character Varieties

### Graduate Student Seminar-Meet the Department Chair

**Title**: Meet the Department Chair**Speaker**: Frank Baginski

### Colloquium-Sandpiles and representation theory

**Title:** Sandpiles and representation theory

**Speaker:** Victor Reiner, University of Minnesota

### University Seminars:Logic Across Disciplines-Transforming Machine Learning Heuristics into Provable Algorithms: Classical, Stochastic, and Neural

Title: *Transforming Machine Learning Heuristics into Provable Algorithms: Classical, Stochastic, and Neural***Speaker:** Cheng Tang, GWU, Computer Science

### Combinatorics-Minor-Closed Classes of Polymatroids

Speaker: Joe Bonin, GWU

Date and time: Tuesday, February 20, 1-2pm

Place: Rome 771

### Combinatorics-Tymoczko's dot action on the cohomology of Hessenberg varieties

Speaker: Patrick Brosnan, University of Maryland

Date and time: Tuesday, February 13, 1–2pm

Place: Rome 771

### Colloqiuim-Infinite time Blum-Shub-Smale machines - computability for analysis

**Title:** Infinite time Blum-Shub-Smale machines - computability for analysis

### University Seminars:Logic Across Disciplines-Effective Ultraproducts and Their Applications

Title: *Effective Ultraproducts and Their Applications*

Speaker: Rumen Dimitrov, Western Illinois University

### Combinatorics-The Graph Brain Project

Speaker: Craig Larson, Virginia Commonwealth University

Date and time: Tuesday, February 6, 1-2pm

Place: Rome 771

### TA Meeting

**TA Meeting**

**Date and Time**: Monday, February 5, 2018, 2:30 pm

**Place:** Philips 704, Math Lab

### University Seminar: Logic Across Disciplines- Topological Spaces of Orderings of Algebraic Structures

**Titl****e:** Topological Spaces of Orderings of Algebraic Structures

### Combinatorics Seminar- Combinatorics and the Quadratic Formula

Speaker: Lou Shapiro, Howard University

Date and time: Tuesday, January 30, 1-2pm

Place: Rome 771

### University Seminar: Logic Across Disciplines-Encoding Noncomputable Sets into Orders on Computable Structures

**Titl****e:** Encoding Noncomputable Sets into Orders on Computable Structures**Speaker:** Valentina Harizanov, GWU

### Applied Math Seminar- The fractional Yamabe problem and the prescribed scalar curvature problem

### Combinatorics Seminar- Interval posets, parity representations, binary partitions, and antiprisms

Speaker: Jim Lawrence, George Mason University

Date and time: Tuesday, January 23, 1-2pm

Place: Rome 771

### Mathematics Alumni Reception

GW Mathematics Alumni Reception at Joint Mathematics Meetings

Description:

### Colloqiuim-Knotoids, Virtual Knots and Applications

Opening Talk of Knots in Washington XLV (Dec. 8-10)

### University Seminar: Logic Across Disciplines-Title: Cohesive Powers, Definability, and Automorphisms

### Applied Mathematics-A Lagrangian Scheme for the solution of nonlinear diffusion equations

**Speaker:** Bertram Düring (Department of Mathematics University of Sussex)

**Date and Time:** Thursday, December 7, 11am-12pm

### Thesis Defense-Jiajun Lu-Pattern Formation in Binary Systems with Inhibitory Long-range Interaction

### Graduate Student Seminars-Optimal descriptions of computable groups

### Colloqiuim- Effective multifractal spectra

**Title:** Effective multifractal spectra

**Speaker:** Jan Reimann, Mathematics, Penn State University

### University Seminar: Logic Across Disciplines-An intuitive description of toposes, toposes as a description of intuitionism

### Combinatorics Seminar- Efficient low-degree polynomial interpolation

Speaker: Alexander Barg, University of Maryland

### Joint Analysis/Applied Math seminar-Green's functions and the existence of the gauge for local and non-local time-independent Schrodinger equations

### Applied Mathematics Seminar-Eigenvalue preservation for the Beris-Edwards system modeling nematic liquid crystals

**Speaker:** Xiang Xu, Ph.D., Old Dominion University**Date and Time:** Friday, November 17, 11am-12pm**Place:** Rome 771

### University Seminar: Logic Across Disciplines-Gödel Index Sets of Computable Structures

### Combinatorics Seminar-Rook theory of the finite general linear group

Speaker: Joel Brewster Lewis, GWU

Date and time: Wednesday, November 15, 4-5pm

### Topology Seminar- Monoidal categories enriched in braided monoidal categories

### University Seminar: Logic Across Disciplines-Classification and measure for algebraic fields

### Graduate Student Seminar-From knot theory to self distributive algebraic structures

### Combinatorics Seminar- The Containment Poset of Hessenberg Varieties

Note the different day and location!

Speaker: Elizabeth Drellich, Swathmore College

### Undergraduate Student Seminar-Cars, Cartoons, and Cohomology

The GW Chapter of the Pi Mu Epsilon Mathematics Honor Society Lecture Series

Speaker: Professor Elizabeth Drellich, Swathmore College

### Graduate Student Seminar- Holder's regularity for solutions of a parabolic equation

### Colloquium-Hacking the Turing Test

**Title:** Hacking the Turing Test

**Speaker:** Vladimir Veselov, PhD

### University Seminar: Logic Across Disciplines-Computable Classification Problem

### Combinatorics Seminar- Degree Sequence Packing

Speaker: James Shook, NIST

Date and time: Wednesday, November 1, 4-5pm

### University Seminar: Logic Across Disciplines-Trees of orderings

### Graduate Student Seminar-The I-method and its application

### Colloquium: Unmasking the ultra-high energy universe

**D****ate and Time:** Friday, October 27 1:00-2:00pm

### Combinatorics Seminar- Symmetric Spherical Grids

Speaker: Lowell Abrams, George Washington University

### University Seminar: Logic Across Disciplines-Orderings of algebraic structures

### Combinatorics Seminar- New directions in delta-matroids

### Combinatorics Seminar- The flags of Minkowski sums of simplices

Speaker: Geir Agnarsson, George Mason University

### Graduate Student Seminar- An algebraic treatment of congruences in Number Theory

### University Seminar: Logic Across Disciplines-Mathathon II: Search for Interesting Torsion in Khovanov Homology

**Title:** Mathathon II: Search for Interesting Torsion in Khovanov Homology

**Speaker:** Jozef Przytycki, GWU

### Combinatorics Seminar- Differences of bijections

Speaker: Dan Ullman, GWU

### Graduate Student Seminar-Introduction of three models of price formation

### Combinatorics Seminar- A New Perspective on the G-Invariant of a Matroid

### Graduate Student Seminar- Stable singularity formations in the nonlinear dispersive equations.

**Title**: Stable singularity formations in the nonlinear dispersive equations.

**Speaker:** Kai Yang, GWU

### Combinatorics Seminar-Unbalanced Wilf-equivalence

**Speaker**: Alex Burstein, Howard University

### Graduate Student Seminar-Basic homological algebra and its application in knot theory

**Title:** Basic homological algebra and its application in knot theory.**Speaker:** Xiao Wang, GWU

### Combinatorics-Matroid Kazhdan-Lusztig polynomials

Speaker: Max Wakefield, US Naval Academy

### Applied Mathematics Seminar- Two-bubble dynamics for the equivariant wave maps equation

Speaker: Jacek Jendrej (postdoc at Univ of Chicago)

### Combinatorics Seminar-Reflection length in affine reflection groups

Speaker: Joel Brewster Lewis, GWU

### Topology Seminar-Introduction to Khovanov homology and Hochschild homology

**Date:** Wednesday, September 6, 2017

### Important date for the beginning of fall semester

**Friday, August 25: 12:00, 7**^{th}** floor of Phillips Hall** —Welcome party; pizza lunch. All faculty and graduate students invited.

### Important date for the beginning of fall semester

**Thursday, August 24, 3:00-5:00 pm, Rome 206** : Meeting of **all instructors with large sections and/or recitation section**s, and **all GTAs.**

### Topology Seminar/Graduate Student Seminar-Cohomology of Line Bundles with Rational Degree

Speaker: Harpreet Bedi (George Washington University)

Title: Cohomology of Line Bundles with Rational Degree

### Thesis Defense

__Honors Thesis Defense__

**Title**: Thesis Defense/presentation session

S**peaker:** Shigeng Sun, GWU

### Colloquium-How a deterministic life gets influenced by a bunch of stochastic shocks

**Title:** How a deterministic life gets influenced by a bunch of stochastic shocks

### Colloquium

**Title:** How a deterministic life gets influenced by a bunch of stochastic shocks

### The George Washington University Chapter of SIAM: Conference on Applied Mathematics 2017

**light breakfast and lunch will be provided**to attendees.

### Graduate Student Seminar

**Title:** Long time behavior of solutions to the generalized Hartree equation

### Graduate Student Seminar-Long time behavior of solutions to the generalized Hartree equation

### Applied Mathematics Seminar

**Title: **Scattering below the ground state for the radial focusing NLS

### Applied Mathematics Seminar- Scattering below the ground state for the radial focusing NLS

**Title: **Scattering below the ground state for the radial focusing NLS

### Colloquium: Delta-matroids and Vassiliev invariants, Opening talk of Knots in Washington XLIV

**Title:** Delta-matroids and Vassiliev invariants, Opening talk of Knots in Washington XLIV

### Special Colloquium/Logic Seminar

Speaker: Rumen Dimitrov, Western Illinois University

### Colloquium-Dynamics of complex singularities and wavebreaking in 2D hydrodynamics with free surface

**Title:** Dynamics of complex singularities and wavebreaking in 2D hydrodynamics with free surface

### Colloquium

### Logic Seminar-Representation of the spaces of orders on computable magmas

# Wednesday, April 19, 2017

5:30–6:30p.m.

Speaker: Trang Ha, GWU

Place: Rome Hall (801 22^{nd} Street), Room 351

### Joint Colloquium/Applied Math/Analysis talk- Singularity Formation in Nonlinear Derivative Schrödinger Equations

**Joint Colloquium/Applied Math/Analysis talk**

### Applied Mathematics Seminar-Singularity Formation in Nonlinear Derivative Schrödinger Equations

**Title: **Singularity Formation in Nonlinear Derivative Schrödinger Equations

### Joint Colloquium/Applied math/Analysis talk

**Title: **Singularity Formation in Nonlinear Derivative Schrödinger Equations

### Colloquium- Rotational symmetries of knots

**Title:** Rotational symmetries of knots

### Logic Seminar-Computable directed graphs with non-computable properties

# Wednesday, April 12, 2017

5:30–6:30p.m.

Speaker: Hakim Walker, GWU

Place: Rome Hall (801 22^{nd} Street), Room 351

### Graduate Student Seminar

**Title:** Topology and Computability of Order Relations on Some Algebraic Structures

### Graduate Students Seminar- Topology and Computability of Order Relations on Some Algebraic Structures

### Colloquium: The shortest path poset of Bruhat intervals

### Logic Seminar

Title: Coding information into orders

Speaker: Valentina Harizanov, GWU

### Logic Seminar-Coding information into orders

# Wednesday, April 5, 2017

5:30–6:30p.m.

Speaker: Valentina Harizanov, GWU

Place: Rome Hall (801 22^{nd} Street), Room 351

### Special Colloquium

**Title:**Just so stories a la carte around Geometry, Dynamics, and PDEs.

**Speaker:** Dmitri Burago, Penn State University

### Colloquium-Just so stories a la carte around Geometry, Dynamics, and PDEs.

**Special Colloquium**

**Title:**Just so stories a la carte around Geometry, Dynamics, and PDEs.

### Graduate Student Seminar-Priority Argument Constructions for Graphs and Trees

### Graduate Student Seminar

**Title**: Priority Argument Constructions for Graphs and Trees

### Colloquium-Distinguished Speculative First of April Talk (with Center for Quantum Computing, Information, Logic, and Topology): Skein modules and Quantum Computing in 3-manifolds

__Distinguished Speculative First of April Talk__

(with Center for Quantum Computing, Information, Logic, and Topology)

### Colloquium

__Distinguished Speculative First of April Talk__**(with Center for Quantum Computing, Information, Logic, and Topology)**

### Graduate Student Seminar- followed by Friday’s Colloquium

__Graduate Student Seminar followed by Friday’s Colloquium__

**Title:** Mapping space methods for skein modules

### Graduate Student Seminar followed by Friday's Colloquium

**Title:** "Mapping space methods for skein modules"

### Logic Seminar

**Speaker**: Michał Godziszewski, University of Warsaw (Philosophy) and CUNY (Mathematics), graduate student and Fulbright research scholar

### Logic Seminar-Computable quotient presentations of models of arithmetic and set theory

# Thursday, March 30, 2017

4:00–5:00p.m.

Speaker: Michał Godziszewski, University of Warsaw and CUNY (Fulbright Research Scholar)

### Graduate Student Seminar

**Title**: Numerical Investigations of Pattern Formation in Binary Systems with Inhib

### Graduate Student Seminar- Numerical Investigations of Pattern Formation in Binary Systems with Inhibitory Long-range Interaction

### Applied Mathematics Seminar-Existence analysis of a single-phase flow mixture with van der Waals pressure

**Title: **Existence analysis of a single-phase flow mixture with van der Waals pressure

### Applied Mathematics Seminar

**Title: **Existence analysis of a single-phase flow mixture with van der Waals pressure

### Graduate Student Seminar

**Title**: Comparative Genomics Meets Genome Assembly: from Ancestral Reconstruction to Genome Sc

### Graduate Student Seminar- Comparative Genomics Meets Genome Assembly: from Ancestral Reconstruction to Genome Scaffolding

### Logic Seminar-Diagonalizing against Scott families

# Wednesday, March 1, 2017

5:30–6:30p.m.

Speaker: Hakim Walker, GWU

Place: Rome Hall (801 22^{nd} Street), Room 351

### Special Colloquium

**Title:** Making nonelementary classes more elementary

**Speaker:** William Boney, Harvard University

### Special Colloquium-Making nonelementary classes more elementary

**Title:**Making nonelementary classes more elementary

**Speaker:** William Boney, Harvard University

### Applied Mathematics Seminar-Droplet phase in a nonlocal isoperimetric problem under confinement

**Title: **Droplet phase in a nonlocal isoperimetric problem under confinement

### Applied Mathematics Seminar

**Title: **Droplet phase in a nonlocal isoperimetric problem under confinement

### Special Colloquium-Model theory and Painlevé equations

**Title:**Model theory and Painlevé equations

**Speaker:** James Freitag, University of Illinois at Chicago

### Special Colloquium

**Title:** Model theory and Painlevé equations

**Speaker:** James Freitag, University of Illinois at Chicago

### Special Colloquium-q-analogues of factorization problems in the symmetric group

**Special Colloquium**

**Title:**q-analogues of factorization problems in the symmetric group

### Special Colloquium

**Title:**q-analogues of factorization problems in the symmetric group

**Speaker:** Joel Lewis, University of Minnesota

### Logic Seminar

**Title:** Diagonal method and tree strategies

**Speaker:** Valentina Harizanov, GWU

### Logic Seminar-Diagonal method and tree strategies

# Wednesday, February 15, 2017

5:30–6:30p.m.

Speaker: Valentina Harizanov, GWU

### Special Colloquium

**Title:** Connectivity and structure in matroids

**Speaker:** Stefan van Zwam, Louisiana State University

### Special Colloquium-Connectivity and structure in matroids

**Title:** Connectivity and structure in matroids

**Speaker:** Stefan van Zwam, Louisiana State University

### Special Colloquium-Gaussian measures on infinite dimensional spaces and applications

**Title:** Gaussian measures on infinite dimensional spaces and applications

### Special Colloquium

**Title:** Gaussian measures on infinite dimensional spaces and applications

**Speaker:** Nathan Totz, University of Massachusetts Amherst

### Special Colloquium-Shapes of polynomial Julia sets

**Title:** Shapes of polynomial Julia sets

**Speaker:** Kathryn Lindsey, University of Chicago

### Special Colloquium

**Title:** Shapes of polynomial Julia sets

**Speaker:** Kathryn Lindsey, University of Chicago

### Logic Seminar-Diagonal method in computability theory

# Wednesday, February 8, 2017

5:30–6:30p.m.

Speaker: Valentina Harizanov, GWU

### Colloquium-Some almost sharp scattering results for the cubic nonlinear wave equation

**Title:** Some almost sharp scattering results for the cubic nonlinear wave equation

### Colloquium

**Title:** Some almost sharp scattering results for the cubic nonlinear wave equation

### Colloquium-Examples of Linear Algebra over Division Algebras

**Title:** Examples of Linear Algebra over Division Algebras

**Speaker:** Salahoddin Shokranian, University of Brasilia

### Knots in Washington XLIII; 60th birthday of J. Scott Carter

**Knots in Washington XLIII; 60th birthday of J. Scott CarterDecember 9-11, 2016George Washington UniversityWashington, DC, USAOrganizers**

### Colloquium

### Logic Seminar

**Speaker**: Wesley Calvert, Southern Illinois University

### Applied Mathematics Seminar

Title: Concentration Compactness for Critical Radial Wave Maps

Speaker: Jonas Lührmann (Johns Hopkins University)

### Graduate Student Seminar

**Title**: Global well-posedness for the critical 2D dissipative quasi-geostrophic e

### Colloquium: A new method to distinguish Legendrian knots

**Title:**A new method to distinguish Legendrian knots

### Graduate Student Seminar

**Title**: Local and global existence of solu

### Topology Seminar

**Title:**Stability in Knot Polynomials

### Applied Mathematics Seminar

**Title: **Exponential tails for the non-cutoff Boltzmann equation

### Graduate Student Seminar

Title: Global regularity of Patlak-Keller-Segel equations that model chemotaxis

Speaker: Xinyu Zhang

### Analysis Seminar-Ball Intersection properties in Banach spaces

### Analysis Seminar

**Title: ** **Ball Intersection properties in Banac**

### Applied Mathematics Seminar

**Title: ** Nonlocal Models and Peridynamics

### Graduate Student Seminar

**Title**: Computable Free Groups and Their Bases

**Speaker**: Iva Bilanovic

### Applied Mathematics Seminar

**Title: **Long time behavior of solutions to the 2D Keller-Segel equation with degenerate diffusion

### Graduate Student Seminar

**Title**: Torsion in rack and quandle homology and

### Colloquium

**Title: **Fixed point theorem and solutions for the Nonlinear Schrödinger e

### Graduate Student Seminar

**Title**: Homological properties of algebraic stru

### Topology Seminar

**Title: **New potential counterexamples to the Generalized Property R Conjecture

### Graduate Student Seminar

### Topology Seminar

**Speaker: **Leonid Chekhov (Steklov Math Inst, Moscow, and Niels Bohr Inst., Copenhagen)

### Undergraduate senior honor thesis defense

Speaker: **Jacob Maibach**

Time**: Thursday, April 29, 11:00am--noon**

### Undergraduate senior honor thesis defense

Speaker: **Thomas Riggs**

Time**: Thursday, April 28, 1:00--2:00pm**

### Math Colloquium

Speaker: VLADIMIR VERSHININ (Universite de Montpellier, France)

Title: BRAIDS AND HOMOTOPY GROUPS OF SPHERES

Abstract:

### Undergraduate senior honor thesis defense

Speaker: **Jacob Learned**

Time: **Friday April 22, 3:00--4:00pm**

### Applied Mathematics Seminar

Speaker: Yongyong Cai, Purdue University Mathematics Department

### Graduate Student Seminar

**Title**: Minimal Surfaces and De Giorgi's Conjecture

### Topology Seminar

**Speaker:**Adam S. Sikora (SUNY at Buffalo)

**Title:**Skein algebras of surfaces

**Abstract:**

### Colloquium

Colloquium on Education in Mathematics

Speaker: Hyman Bass (University of Michigan)

Title: A vignette of mathematical practices in action

### Graduate Student Seminar

**Title**: Mathematical models and algorithms for genome rearrangements and genome assembly

### Graduate Student Seminar

**Title**: Yang-Baxter Operators and Knot Theory.

**Speaker**: Xiao Wang

### Analysis Seminar-Local limits of Dyson's Brownian Motion at multiple times.

**Speaker:**

### Analysis Seminar

**Speaker:** Professor Diane Holcomb, University of Ari

### Colloquium

Math Department Colloquium -- Distinguished Speculative First of April Talk

Speaker: Scott Carter (University of South Alabama)

### Applied Mathematics Seminar

Speaker: Simone Mazzini Bruschi, University of Brasilia - Brazil

### Logic seminar

Speaker: Johanna Franklin, Hofstra University, NY

### Teaching Seminar

**Title:** What is fundamental mathematical knowledge/reason

### Colloquium

Speaker: Taduri Srinivasa Siva Rama Krishnarao (Indian Statistical

Institute, Bangalore Centre, and University of Memphis)

### Graduate Student Seminar

**Title**: In pursuit of canonical structures on cellularly embedded graphs

**Speaker**: Jason Suagee

### Topology Seminar

Speaker: Zhiyun Cheng (Beijing Normal University, and GWU)

### Analysis Seminar

**Speaker:** Professor David Drasin, Purdue University

### Analysis Seminar-A geometric function theory for dimensions greater than two

**Speaker:** Professor David Drasin, Purdue University

### Applied Mathematics Seminar- A Parallel Computational Model for 3D Thermo-Mechanical Stokes Flow Simulations of Ice Sheets

Speaker: Professor Lili Ju, University of South Carolina

Date and Time: March 10, 4-5pm

Place: Rome 771

### Applied Mathematics Seminar

Speaker: Professor Lili Ju, University of South Carolina

### Topology Seminar

**Speaker:**Marithania Silvero Casanova (Universidad de Sevilla, Spain)

### Special Colloquium

Speaker: Qing Han (Notre Dame)

Title: Isometric Embedding of 2-Dim Riemannian Manifolds in Euclidean 3-Space

### Graduate Student Seminar

**Title**: POLITICS IS FOR PRESENT, BUT AN EQUATION IS FOR E

### Analysis Seminar-Complexity, periodicity, and applications to zero entropy symbolic dynamics

**Speaker:** Van Cyr, Bucknell University

### Special Colloquium

Speaker: Alex Iosevich (University of Rochester)

Title: Orthogonal bases and tiling: analysis, number theory and combinatorics

### Special Colloquium

Speaker: Carolyn Chun (US Naval Academy)

### Graduate Student Seminar

**Title**: Behavior of solutions in the Nonlinear Klein-Gord

### Colloquium: On the Nature of Mathematical Proofs: A Cryptographic Perspective

Speaker: Jonathan Katz (UMD)

Title: On the Nature of Mathematical Proofs: A Cryptographic Perspective

Abstract:

Beginning in the mid-'80s, complexity theorists began radically

### Graduate Student Seminar

**Title:**Can Computers Do Anything?

### Colloquium

### Topology Seminar

**Title:**Homotopy Theory of Link Homology via the Dold-Kan Theorem

&

### Colloquium

### Topology Seminar

### Logic seminar

Speaker: Tslil Clingman, GWU

Title: *An exploration of the category of relations*

### Applied Mathematics Seminar

### Colloquia

**Speaker: **Ajit Iqbal Singh, Indian National Science Academy

### Topology Seminar

### Logic seminar

# Speaker: Rumen Dimitrov, Western Illinois University

### Topology Seminar

**Title**: Homology Spectral Sequence

**Speaker**: Harpreet Bedi

**Abstract**: In this talk we show the construction of

### Quantum Computing Seminar

# Speaker: Ajit Iqbal Singh, Indian National Science Academy

### Colloquium

**Speaker: **Alissa Crans, Loyola Marymount University (Los Angeles)

### Topology Seminar

**Title: **Homology Spectral Sequence from Filtered Complex.

### Graduate Student Seminar

**Title:**Interior and Boundary Spikes for Two-dimensiona

### Topology Seminar

**Speaker:** Seung Yeop Yang (GWU)**Title:** Torsion in rack homology

### Graduate Student Seminar

### Topology Seminar

### Applied Mathematics Seminar

### Topology Seminar

### Applied Mathematics Seminar

Speaker: Yihong Du, University of New England, Australia

### Topology Seminar

**Title:** Invariants of finite type for curves on surfaces revisited.

### Math Major Undergraduate Talk

__Math Major Undergraduate Talk__

### Math Colloquium

**Speaker: **Robert L. Devaney, Boston University

### Applied Mathematics Seminar

Speaker: Jose Vega-Guzman, Howard University

Title: On the solution of some nonautonomous evolution equations<p>

### Topology Seminar

Title: A Knot's Tale: Three great men, two smoking boxes, one

### Applied Mathematics Seminar

Speaker: Juhi Jang,

University of California, Riverside

Title: On the kinetic Fokker-Planck equation with absorbing barrier

### Topology Seminar

### Applied Mathematics Seminar

Speaker: James Colliander, University of Toronto

Title: Big frequency cascades in the nonlinear Schrodinger evolution

### Colloquium

### Topology Seminar

### Data MASTER Colloquium

**Data MASTER colloquium**

**Speaker: **Robert E. Kass, Carnegie Mellon University

### Math Colloquium

**Math Colloquium **

(Distinguished Speculative First of April Talk)

**Speaker: **Scott Aaronson, MIT

### Math Colloquium

**Title**: Injury-initiated clot formation under flow: a

### Analysis Seminar

### Analysis Seminar

Speaker: Professor Jane Hawkins, University of North Carolina, Chapel Hill

Title: Elliptic Functions, Lattices, and Dynamics

### Colloquium

**Mathematics Colloquium (Jointly with ****Knots in Washington XL) **

### Topology Seminar

**Tit**

### Applied Math Seminar

Speaker: Alina Chertock,

North Carolina State University

Title: Interaction Dynamics of Singular Wave Fronts Computed by Particle Methods

### Analysis Seminar

**Speaker:**Robbie Robinson

**Title**: Introduction to Gaussian Processes Part 2

### Applied Math Seminar

Speaker: Francesco Maggi,

University of Texas, Austin

Title: Formulations of Plateau problem and the existence of minimizers

### Applied Math seminar

Speaker: Aynur Bulut

University of Michigan

Title: Random data Cauchy problems for nonlinear Schr\”odinger and wave equations

### Analysis Seminar

**Title: **Introduction to Gaussian Processes**Speaker:** Robbie Robinson, George Washington University**Place:** Monroe 267

### Logic Seminar

**Title:** Complexity of relations and the arithmetical hierarchy

**Speaker:** Leah Marshall, George Washington University

### Colloquium

**Title: ** Planar graphs are 9/2-colorable and have independence ratio at least 3/13

### Graduate Student Seminar

**Date and Time:** Friday, January 23, 3:30-5:00pm

### Joint Math 6720 and Logic Seminar

Speaker: Professor Rumen Dimitrov, Western Illinois University

Title: Standard and Nonstandard Ways of Constructing Nonstandard Structures

Abstract:

### Undergraduate seminar

Speaker: Jiayuan Wang

Title: A computational method for solving exponential-polynomial Diophantine equations

### Colloquium

**Speaker:** Archana Khurana (University of Baltimore)

Title: On multi-index fixed charge bi-criterion transportation problem

### Quantum Computing Seminar

Speaker: Jason Suagee (GWU)

Place: Monroe 115

Date and Time: Thursday, December 4, 11:10-12:25pm

### Data MASTER Seminar and Q & A on Data MASTER Program

**Data MASTER Seminar and Q & A on Data MASTER Program**

### Colloquium

**Speaker: **Pavel Lushnikov (University of New Mexico)

### Quantum Computing Seminar

**Speaker: **Robert M. Owczarek (UNM)**Title: **Dynamical Symmetries in Quantum Computing and Fighting Decoherence

### Quantum Computing Seminar

**Speaker: **Robert M. Owczarek (UNM)**Title: **Quantum Mechanics for Quantum Computers

### Data MASTER seminar

**Title: **Multiplexity and Multilevel Networks: Opportunities and Challenges**Speaker: **Jonathon Mote, GW

### Special Colloquium Talk

**Speaker:** Uwe Kaiser (Boise State University)

### Topology Seminar

**Speaker: **Evgeny Fominykh (Chelyabinsk State University)

### Graduate Student Seminar

**Speaker:**Seung Yeop Yang

**Title:**Torsion of a finite quasigroup quandle is annihilated by

### Halloween Topology seminars

**Speaker:** Carl Hammarsten (GWU)**Title: **Combinatorial Heegaard Floer Homology and Decorated Heegaard Diagrams.

### Analysis Seminar

**Speaker**: Brooke Yancey of the University of Maryland.

### colloquium

**Speaker:** David Kopriva (Florida State University)

### Logic Seminar

**Time: **Friday, 9/26, 2:30-3:30pm**Speaker: **Russell Miller, City University of New York

### Colloquium

This event is co-sponsored by the GW Confucius Institute

### Logic Seminar

**Speaker: **Leah Marshall, GWU (graduate student)

### Data MASTER seminar

**Speaker:**Yongwu Rong (GWU)

**Abstract:**Complex networks arise naturally in many disciplines, from computer networks to interactions of b

### Logic -Topology Seminar

**Speaker: **Przytycki, Jozef (GWU)

### Topology Seminar

**Speaker: **Nathan Dowlin, Princeton University*

* the speaker is a graduate student visiting GW.

### Roundtable Conversation with GW Undergraduates

Roundtable Conversation with GW Undergraduates

### Knots in Washington XXXVIII: 30 years of the Jones polynomial

Knots in Washington XXXVIII: 30 years of the Jones polynomial May 9-11, 2014;

### Colloquium

**Speaker: **Neil J. A. Sloane, Mathematics Department, Rutgers University, Piscataway, NJ.

### Applied Math Seminar

**Speaker:** Chun Liu, Pennsylvania State University.

### Graduate Student Seminar

Title: Introduction to Yang-Baxter Homology

### Logic Seminar April 10

**Speaker:** Wesley Calvert, Southern Illinois University

### Topology seminar

**Speaker:** Ivan Dynnikov, University of Moscow

### Analysis Seminar

**Speaker**: Irina Popovici, US Naval Academy

### Applied Math Seminar

**Speaker:** Xiaofeng Ren, George Washington University.

### Analysis Seminar

Uwe Grimm, Open University, UK

Pure point diffraction is one indicator of `order' for a given

structure. Apart from periodic arrangements, such as those found in

### Colloquium

Michael Baake, University of Bielefeld, Germany

The discovery of quasicrystals by Dan Shechtman in 1982

has shown that there are interesting systems beyond perfect

### Applied Mathematics Seminar

**Abstract: **We exhibit a surprising relationship between elliptic gradient systems of PDEs, multi-marginal Monge-Kantorovich optimal transport problem, and multivariable Hardy-Little

### Analysis Seminar

**Speaker:** Flavia Colonna, George Mason University

### Colloquium

Affiliation: University of Connecticut and NSF

Title: Diffusions, Fractional Laplacians and Traveling Waves

### Topology Seminar

**Speaker:** Krishnendu Gondgopadhyay ( IISER Mohali. India)

### Applied Mathematic Seminar

Speaker: Qiang Du, Penn State University

Abstract: Nonlocality is ubiquitous in nature. While partial differential

equations (PDE) have been used as effective models of many physical

### Topology Seminar

Title: Introduction to Khovanov type graph homology for non-commutative algebras I:

Homology of small categories with functor coefficients

### Analysis Seminar

Speaker: Terry Adams, US DoD

Authors: Terry Adams and Cesar Silva

### Graduate Student Seminar

### Logic Seminar February 27

Speaker: Leah Marshall, GWU

### Applied Math Seminar

Speaker: Mingfeng Zhao, University of Connecticut.

### Analysis Seminar

Speaker: Tyler White, Northern Virginia Community College

### Colloquia joint with AMW Chapter of GWU

### Applied Mathematics Seminar

### An Introduction to twist spinning of knots

An Introduction to twist spinning of knots

### Speaker: Juncheng Wei

Abstract: Understanding the entire solutions of nonlinear elliptic equations

### The theory of fields is complete for isomorphisms

Abstract: We give a highly effective coding of countable graphs into countable fields. For each countable graph G, we build a countable field F(G), uniformly effectively from an arbitrary pre

### LOGIC--TOPOLOGY SEMINAR

**Speaker**: Victoria Lebed (Advanced Mathematical Institute, Osaka City University,Japan)

**Title**: Towards topological applications of Laver tables

### Towards topological applications of Laver tables

(The talk will be introduced by Valentina Harizanov description of

Richard Laver (1942-2012) work in logic.)

### Towards topological applications of Laver tables

Abstract: Laver tables are certain finite shelves (i.e., sets endowed with a binary operation which is distributive with respect to itself).

### Knots in Washington XXXVII

**Organizers**

### Logic in Baltimore

2014 Joint Math Meetings, Baltimore Convention Center: January 15–18, 2014

### Topology Seminar

**Speaker**: Robin Koytcheff (University of Victoria)

**Coauthors**: John Burke

**Title**: A colored operad for string link infection

### Topology Seminar

**Speaker**: Robin Koytcheff (University of Victoria)

### The open problem regarding the automorphisms of L*(Q_inf)

Abstract: Guichard proved in 1984 that there are countably many automorphisms of the lattice L(Q_inf) of computably enumerable subspaces of Q_inf by proving that the automorphisms are generated&nbs

### C.e. and co-c.e. structures and their isomorphism

Abstract: Computable structures and their isomorphisms have been studied extensively in computable structure theory.

### Finite Difference Methods for Nonlinear Elliptic Equations with Application to Optimal Transport

**Abstract:** We describe the use of finite difference methods for solving nonlinear elliptic partial differential equations (PDEs).

### Connections between Complex Dynamics and Ergodic Theory

**Abstract**: While the Julia sets of rational maps of the sphere usually conjure up images of interesting topological features, they also possess many measure theoretic properties wor

### Contact Lenses and Tear Film Evolution

**Abstract: **The tears that surround your eye are an integral part of proper eye function.

### Recent Topics in Integro-Differential Equations

**Abstract:** We will give a brief overview of some recent results on the analysis of elliptic integro-differential equations (which are the natural class of generators of Markov proce

### Orderable groups and their spaces of order

Abstract: A left order on a group G is a linear order of the domain of G, which is left-invariant under the group operation. Right orders and bi-orders are defined similarly.

### Norm Approximation in Ergodic Theory

**Abstract:** Classical ergodic averages give good norm approximations, but these averages are not necessarily giving the best norm approximation among all possible averages.

### Topological transitivity for interval map

**Abstract:** Topological transitivity is one of the three pillars of Bob Devaney's definition of chaos, along with sensitive dependence on initial conditions, and dense periodic point

### Orderings of algebraic structures on trees

Abstract: A partial left ordering or bi-ordering of an algebraic structure is a partial ordering of the elements of the structure, which is invariant under the structure acting on itself on the lef

### Quandles and codimension two embeddings

Abstract: Distributivity has been an integral part of logic for a long time. An attempt to decouple them in linear logic applied to quantum mechanics was not successful.

### Analysis Seminar by Yen Do (Yale)

Title: Quantitative convergence of Fourier series in weighted settings.

### Representations of Quantum Channels

**Abstract**: Every qubit channel can be realized as an affine map on the unit ball; the map is called the Bloch representation of the qubit channel.

### Quantum Computation and Quantum Simulation Experiments with Trapped Ions

**Abstract**: The experimental implementation of a large-scale quantum computer remains a major outstanding challenge.

### Signal processing with the Euler calculus

**Abstract**: It happens that many of the transforms traditionally used in signal processing have natural analogs under the Euler integral, popularized by Baryshnikov and Ghrist.

### Optimal regularity estimates for non linear continuity equations

**Abstract:** We prove compactness and hence existence for solutions to a class of non linear transport equations.

### Topological Mixing Tilings of $\mathbb{R}^2$ Generated by a Generalized Substitution

Abstract: Kenyon, in his 1996 paper, gave a class of examples of tilings of \mathbb{R}^2 constructed from generalized substitutions.

### SYMPOSIUM on Mathematics and Presidential Campaigns

Opening Remarks: Leo Chalupa, Vice President for Research.

Keynote Speaker: John Banzhaf, Law School, Inventor of the "Banzhaf Index of Voting Power"

### A Discrete Bernoulli Free Boundary Problem

**Abstract**: We consider a new type of free boundary problem for the p-Laplace operator.

### WEIGHTED COMPOSITION OPERATORS BETWEEN M¨OBIUS-INVARIANT ANALYTIC FUNCTION SPACES

### On the Logical Formalization of Single Photon Self-Interference

**Abstract**: We consider the particle interference problem in quantum physics, and discuss a Curry-Howard isomorphism based logical analysis of this problem.

### Retractive Groups

Abstract: One goal of our current research is to define a new area called algebraic information theory.

### Application of Compressive Sensing to Cognitive Radio and Digital Holography

**Abstract**: One of the key aspects of cognitive radio is the concept of dynamic spectrum access, where a radio searches for a (temporarily) unused white space in order to transmit an

### An Introduction to Infinite-Dimensional Categorical Quantum Computing

Abstract: Category theory has proven promising in capturing the logic of quantum information processing at a fairly high level, in similar fashion to Boolean logic and classical computing.

### The magic behind quantum computing: Square Root of (-1)

Abstract: The soothingly graspable formalism of Quantum Mechanics (comprising of quite elementary concepts of linear algebra) contrasts strongly with profound interpretational problems of this form

### Homology of a Small Category with Functor Coefficients and Barycentric Subdivision.

**Abstract: **We will introduce the definition of homology of a small category with functor coefficients and then compare two different homologies when we take the category of a simpli

### Character Varieties of surfaces as completely integrable systems

**Abstract**: It is known that the trace functions of a maximal set of disjoint simple closed curves on a closed surface make its SU(2)-character variety into an (almost) completely in

### Adiabatic quantum computing: equivalence with quantum computing

Abstract: The adiabatic quantum computing (AQC) was originally introduced to solve optimization problems by constructing two Hamiltonian operators where the first one is easy to prepare and the sec

### The Bonahon Metric and Topology

**Abstract**: In his book “Low-Dimensional Geometry: From Euclidean Spaces to Hyperbolic Knots”, Francis

### Mochizuki's quandle 3-cocycle invariant of links S^3 is one of the Dijkgraaf-Witten invariants

**Abstract:** Let p be an odd prime, and \phi the Mochizuki 3-cocycle of "the

dihedral quandle" of order p. Using the 3-cocycle, Carter-Kamada-Saito

### Jointly with Math Colloquium and Applied Math Seminar: Topological Quantum Computation

**Abstract**: Quantum computing models have the potential to perform tasks such as factoring integers and simulating quantum physics exponentially faster than any known classical algor

### Modified right-angled Artin groups.

Abstract: The family of right-angled Artin groups (RAAGs) interpolates between the family of finitely generated free groups on one hand and the family of finitely generated free abelian groups on t

### Adiabatic quantum computing: application to NP-hard problems

Abstract: Adiabatic quantum computing (AQC) have been shown to be a useful tool for approximating optimization problems. We show an experimental study of the AQC applied to the MaxSat problem.

### Homology of Distributive Lattice

Abstract: While homology theory of associative structures, such as groups and rings, was extensively studied in the past, beginning with the work of Hopf, Eilenberg, and Hochschild, homology of non

### Adiabatic quantum computing: the construction of Hamiltonian operators

Abstract: Adiabatic Quantum Computing (AQC) has been applied to solve optimization problems.