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We will meet briefly to sign up for talks.

Tomoyuki Arakawa, RIMS and MIT, Vertex algebras and symplectic varieties

In my talk I will discuss some remarkable correspondence between symplectic varieties and vertex algebras, which has been discovered by physicists in the study of the four-dimensional N = 2 superconformal field theories. In the special class of the four-dimensional N = 2 superconformal field theories called the “theory of class S”, such correspondence is mathematically explained in terms of the…

MGSA Movie Night

SAS 2203

You'll laugh, you'll cry, you'll probably consider planning a trip to Vegas. You can click here to watch a trailer of this cinematic masterpiece. We hope to see you all there! Your MGSA Secretary, Mallory

Spring Departmental Meeting

SAS 1102

The Spring Departmental meeting will take place on Tuesday, January 16, 2018, 4:15PM-5:30PM in SAS 1102. Dean McGahan will be attending and will speak at the meeting. I solicit questions from the faculty that will be sent to the Dean ahead of the meeting so that she can address them when she comes. The Dean will be available for…

AWM weekly brown bag lunch

SAS 4104

The Association for Women in Mathematics (AWM) will be hosting our weekly brown bag lunch. Attendees bring their own lunches, and have the opportunity to be in a casual discussion environment, while we provide a tasty treat! AWM is NOT exclusively for women, and we would like to emphasize that everyone is welcome join us…

Mike Wong, LSU, Combinatorial invariants of transverse links via cyclic branched covers

Grid homology is a version of knot Floer homology in the 3-sphere that is entirely combinatorial and simple to define. Exploiting this, Ozsvath, Szabo, and Thurston defined a combinatorial invariant of transverse links in the 3-sphere using grid homology, which was then used to show that certain knot types are transversely non-simple by Ng, Ozsvath,…

Ryan Vogt, NC State, SIAM Student Chapter Tutorial Series: Introduction to the Finite Element Method

SAS 2235

The Finite Element Method(FEM) is one of many numerical methods to approximate solutions to ordinary and partial differential equations. FEM has been applied to numerous problems found in the fields of Fluid Mechanics, Electromagnetics,  Lagrangian Mechanics, etc. While there are many approaches to the Finite Element Method, I will present the Galerkin approach. I will…

Cynthia Vinzant, NC State, Slicing Space

Suppose we lazily slice up the SUM series pizza. How many pieces can we make with just a few slices? What if we had a watermelon? Together we will try to answer this prob- lem and explore some of the beautiful geometry behind it. No background will be assumed and this talk should be ac-…

Seth Sullivant, NC State, Algebraic Statistical Models in Phylogenetics

SAS 4201

Phylogenetics is the branch of mathematical biology concerned with constructing evolutionary relationships between collections of species.  These lectures will introduce these models, in particular emphasizing the ways that algebraic statistics can be used to analyze properties of the models.  Viewed from the perspective of algebraic statistics, the corresponding algebraic varieties that arise are often familiar…

Michael Singer, NC State, Walks, Difference Equations and Elliptic Curves

SAS 4201

Many questions in combinatorics, probability and thermodynamics can be reduced to counting lattice paths (walks) in regions of the plane. A standard approach to counting problems is to consider properties of the associated generating function.  These functions have long been well understood for walks in the full plane and in a half plane. Recently much attention has focused on walks…

Deane Yang, New York University, Introduction to Convex Geometry and Brunn-Minkowski Theory

SAS 4201

Convex geometry is the study of convex bodies in Euclidean space. Despite the apparent simplicity of such objects, they are a source of many deep mathematical discoveries and mysteries. This talk will present a survey of Brunn-Minkowski theory, which is the study of affine geometric invariants and inequalities satisfied by convex bodies. Unlike differential geometry,…

Khai T. Nguyen, NC State, Burgers Equation with Some Nonlocal Sources

SAS 4201

This talk will present some recent results on the global existence of entropy weak solutions, priori estimates, and a uniqueness result for both Burgers-Poisson and Burgers-Hilbert equations which were derived from models of nonlinear wave with constant frequency. Some open questions will be discussed.

Nathan Reading, NC State, Two triangles in a torus

With a very stretchy square piece of paper, you can make a torus: Glue opposite sides of the square together to make a tube and then stretch and bend the tube to bring the two cir- cular ends together. Since the square can be built out of two triangles, you’ve made a torus out of…