# Graduate Student Seminars

**Upcoming Graduate Student Seminar Seminars**

**Past Graduate Student Seminar Seminars**

**DMS Graduate Student Seminar**

Sep 20, 2023 03:00 PM

108 ACLC

Speaker: **Nicholas Gaubatz**, Auburn University

Title: Programming in Grad School: An Overview and an Algebra Project

**DMS Graduate Student Seminar**

Sep 06, 2023 03:00 PM

108 ACLC

Speaker: **Elvan Ceyhan**, Auburn University

Title: Stochastic Obstacle Scene Problem on Spatial Networks

Abstract: The goal of this research is finding optimal or near-optimal solutions to the stochastic obstacle scene (SOS) problem using spatial network optimization. We will study two variants of the SOS problem: (i) Optimal Traversal Path (OTP) Problem: This is the original SOS problem which only considered a single navigating agent (NAVA) whose goal is choosing a path in the space containing “forbidden regions”, so as to minimize the cost sustained until arrival. (ii) Optimal Obstacle Placement (OOP) Problem: This second problem is recently introduced and considers an obstacle placing agent (OPA) inserting obstacles in the traversal window so as to maximize NAVA’s traversal length. Our research objectives are to (a) extend the SOS problem in various directions, e.g., high dimensional version and develop potential strategies to improve OTP and OOP algorithms, (b) introduce and develop the weight constraint versions of both SOS variants, study the solution strategies and develop a more comprehensive approach to network traversal optimization/obstruction all from the probabilistic/statistical and computational points of view, and (c) study the theoretical properties (including complexity) of the network traversal and obstruction algorithms together with the characterization of the cost functions for the OTP problem.

**DMS Graduate Student Seminar**

Aug 30, 2023 03:00 PM

108 ACLC

Speaker: **Isabel Harris**, Auburn University

Title: A Necessary Condition for Ar_{k} – Bounded Graphs

Abstract: Abstract: A simple graph with e = E(G) avoids a k-rainbow coloring if any color appears on at least k+1 edges of G. For k ∈ P, AR_{k}(G, n) is the maximum number of colors in an edge coloring of K_{n} so that in every copy of G, some color occurs on at least k+1 edges. G is AR_{k}-bounded if AR_{k}(G,n) ≤ c for some c ∈ P and all n sufficiently large. This talk will discuss a necessary condition for classifying graphs into AR_{k}-bounded or AR_{k}-unbounded.

**DMS Graduate Student Seminar**

Aug 23, 2023 03:00 PM

108 ACLC

Speaker: **Dalton Bidleman**

Title: Intersection Structures on Secants of Grassmannians

Abstract: Restricted secant varieties of Grassmannians are constructed from sums of points corresponding to *k*-planes with the restriction that their intersection has a prescribed dimension.

**DMS Graduate Student Seminar**

Apr 26, 2023 03:00 PM

108 ACLC

Speaker: **Dr. Steven Clontz** (University of South Alabama)

Steven obtained his PhD in Math from Auburn in 2015 and currently holds a tenured associate professorship at the University of South Alabama. During the seminar, he will share with us his experiences at Auburn and how they have influenced his career.

**DMS Graduate Student Seminar**

Apr 19, 2023 03:00 PM

108 ACLC

**Stacie Baumann**

**DMS Graduate Student Seminar**

Apr 12, 2023 03:00 PM

108 ACLC

Speaker: **Chinedu Eleh**

Title: Show Me A Function: More Than Meets The Eye

Abstract: Mathematics is a fascinating subject used to understand functions' properties and behavior. From simple precalculus to challenging graduate-level courses, there is an intricate web of functions to explore. Unfortunately, functions that arise from real life problems are elusive, hard to characterize and can often only be approximated. In this talk, we will discuss practical methods used to uncover valuable functions in a variety of applications.

Prerequisite: a curious mind!

**DMS Graduate Student Seminar**

Apr 05, 2023 03:00 PM

108 ACLC

**Dr. Junshan Lin**

**DMS Graduate Student Seminar**

Mar 29, 2023 03:00 PM

108 ACLC

Speaker: **Professor Pete Johnson**

Title: Euclidean Coloring Problems: The Origin Story

Abstract: The Four-Colour Conjecture begat not only graph theory but also "coloring problems." For instance, around 1916 Issai Schur proved that if r > 1 and you color [N] = {1,,,,,N} with r colors, then for all N sufficiently large (depending on r) you cannot avoid the existence of integers a, b, and c in [N], all of the same color, such that a + b = c. This is a coloring result that is only distantly related to graph theory results. In 1950 an 18-year-old student, Edward Nelson, asked a classmate: What do you think is the smallest number of colors with which the points of the plane are colorable so that any two points (Euclidean) distance 1 from each other are colored differently? This question is still open, as are a great number of other questions that have germinated in certain human minds exposed to Nelson's question.

**DMS Graduate Student Seminar**

Mar 22, 2023 03:00 PM

108 ACLC

**Colby Muir**