# Past Events

### 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

Date and Time: Friday, November 22, 2:00PM-3:00PM

### 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

Title: Counting real conjugacy classes with generating functions

### 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

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

### 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

### 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- 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

### Applied Mathematics Seminar

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

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

### Graduate Student Seminar

**Title:** 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-Connectivity and structure in matroids

**Title:** Connectivity and structure in matroids

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

### Special Colloquium

**Title:** Connectivity and structure in matroids

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

### Special Colloquium

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

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

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

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

### 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)

### Topology Seminar

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

**Coauthors**: John Burke

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

### 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.