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Research Seminars: Graduate Student Colloquium


Fall 2016

Time & Location: All talks are on Tuesdays in Stanley Thomas 316 at 4:30 PM unless otherwise noted.
Organizer: Alexej Gossmann



January, 24

Special Faculty Talk: The Method of Brackets

Victor H. Molltulane University

Abstract:

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January 31

Some Algebraic Properties of Toric Edge Ideals

Silvi BeyarslanTulane University

Abstract:

Student Colloquium

 

 


February 7

Poincare Duality With Local Coecients

Fang SunTulane University

Abstract: TBA


February 14

Lasso, Group Lasso, and SLOPE

SpeakerTulane University

Abstract:

 

From linear regression, I will introduce the penalty method such as ridge method and lasso method. However, in some cases, the variates have strong correlation with each other, then we can use the group lasso. After that, I will talk about SLOPE(sorted L-One Penalty Estimation), which is method similar to the lasso method and consider the false discovery rate as the criteria.

 


February 21

Topic

SpeakerInstitution

Abstract: TBA


February 28

Topic

SpeakerInstitution

Abstract: TBA


March 7

Topic

Diego VillamizarTulane University

Abstract:

"I will talk about r-indecomposable factorial numbers, and how I do not know anything about them.

 


March 14

Everything You Always Wanted to Know About Pi (But Were Afraid to Ask)

Aram BinghamTulane University

Abstract:

Imagine all of the internet burns down, with all the books inside it, and we have to recreate the current state of mathematics with our bare brains. What facts about pi (pronounced pee) will we retain? After reciting some of the trivia which is Pi Day orthodoxy, we will discuss proofs of those aspects of pi we take most for granted, making reference to open problems as well.

 


April 4

Antibody-mediated immobilization of virions in mucus

Speaker: Melanie JensenTulane University

Abstract:

 

Using particle tracking data, we construct a multi-scale model assuming linear rates to describe the dynamics of virions in a mucosal medium in varying exogenous antibody concentrations. First, we develop a classification system for the data based on the trajectories of the visions that correspond to Brownian and stationary motion. While the antibody-mucin dynamics and the virion-antibody-mucin dynamics occur on different time scales, we model both interactions with continuous-time Markov Chains in order to compute the stationary distribution of virion immobilization.  To specify our model with the data, we use identifiability analysis to set mathematically optimal and biological feasible parameter values. Finally, we compare theoretical immobilization times with observed immobilization times  to determine if the virion-antibody-mucin dynamics can be approximated using linear rates.   


 


April 11

Applied and Computational Topology

Sushovan MajhiTulane University

Abstract:

Let's add topological twist and computational toppings to the pizza.  We will talk about the recent developments in Applied and Computational Topology. We will also talk about the opportunities and career options in this relatively young branch of mathematics.



April 18

Surreal Numbers and Nimbers

Jonathan O'RourkeTulane University

Abstract:

We will discuss the class of numbers called "surreal numbers" by Donald Knuth: the largest totally ordered field that contains the real numbers. We will construct them via John Conway's game, Hackenbush. We will also construct another collection, "nimbers," and discuss properties of both collections.



April 25

Topic

Robyn BrooksTulane University

Abstract:

 

How many famous women mathematicians do you know?  This talk will focus on some of the women (past and present) who have contributed to the field of mathematics.

Date

Topic

SpeakerInstitution

Abstract: TBA


Mathematics Department, 424 Gibson Hall, New Orleans, LA 70118 504-865-5727 math@math.tulane.edu