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Seminars and Colloquiums
for the week of November 16, 2015


Jim Conant, UTK, Monday
Shashikant Mulay, UTK, Monday
Andrew Marchese, UTK, Tuesday
Kertesha Riley, UT Center for Career Development, Wednesday
Kelly Rooker, Betsy Heines, and Liguo Wang, UTK, Wednesday
Dimitry Schebarchov, University of Cambridge, Wednesday
Karthik Adimurthi, LSU, Thursday
Mustafa Elmas, UTK, Friday
James Sunkes, UTK, Friday

3:00 – 3:30 pm, Ayres 401
Monday, Tuesday, & Wednesday
Hosted By: Eric Olberding and Thomas Weighill, UTK


Monday, November 16th

TITLE: Morita classes in the homology of Out(F_n)
SPEAKER: Jim Conant, UTK
TIME: 2:30
ROOM: Ayres 114
The homology of Out(F_n) sounds rather technical and scary, but it's actually just the homology of a very concrete space constructed using graphs. We will outline this construction and show how to define subspaces which should give homology classes, the so called Morita classes. It is a very important open problem whether these are nonzero! To date the first three have been shown to be nontrivial. We will show how the first Morita class can be realized as a 4-sphere embedded in the moduli space of graphs. Joint work with Allen Hatcher, Martin Kassabov and Karen Vogtmann.

TITLE: Unimodular rows and Hermite rings I
SPEAKER: Shashikant Mulay, UTK
TIME: 3:35-4:25
ROOM: Ayres 114
Closing remarks on and some open problems in the algebra of Unimodular Rows.

Tuesday November 17th

TITLE: Machine Learning: A Stochastic Point of View, Part 2
SPEAKER: Andrew Marchese, UTK
TIME: 2:10 – 3:10pm
ROOM: Ayres 114
I will talk about machine learning and how we can apply statistic and probabilistic methods to model selection. I will introduce the Vapnik-Chervonenkis dimension and the Rademacher Complexity and show how they can be used in analyzing and bounding generalization error rates for both balanced and unbalanced data.

Wednesday November 18th

TITLE: Job Interview Skills
SPEAKER: Kertesha Riley
TIME: 9:05-9:55 am
ROOM: Ayres 405
Kertesha is from the UTK Center for Career Development. She will be talking about job interview skills and how to prepare.

TITLE:  SIAM Student Chapter Panel Discussion on Industrial Internships
SPEAKER: Kelly Rooker, Betsy Heines, and Liguo Wang, UTK
TIME: 12:20 – 1:10
ROOM: Ayres 405
You are invited to a panel discussion with current graduate students in mathematics where they will discuss their experiences working in industrial internships over this past summer. We hope this will give you an idea about the types of opportunities in industry available to mathematicians and how to get involved in them. Below are the panelists and their positions this past summer. Pizza will be served!

Kelly Rooker worked with RAND Corporation over the summer. They are a non-partisan, non-profit research advisory group, specifically aimed at addressing public policy issues.

Betsy Heines had an internship with the FDA in their Division of Imaging, Diagnostics, and Software Reliability. In particular, she helped to develop a statistical methodology to evaluate the relationship between mitotic cell count and survival time of a patient.

Liguo Wang had an internship at Bank of New York Mellon in Pittsburgh. His work focused on building statistical models.

TITLE: Some insights from atomistic modelling of nanoalloys
SPEAKER: Dimitry Schebarchov, University of Cambridge
TIME: 3:35 – 4:35 pm
ROOM: Ayres 112
Multi-metallic nanoscale particles (nanoalloys) exhibit size- and composition-dependent properties that can be exploited in catalysis, gas sensing, and other applications. Much insight into nanoalloy structure and thermodynamics can be inferred from atomistic models, but it often poses a formidable global optimisation problem as well as a sampling problem. In this talk I will describe some methods and approximations that help dealing with these two challenges. I will then use some of these methods to illustrate how nanoalloy structure and thermodynamics can be tuned by adjusting the properties of a single dopant atom and/or by straining the underlying substrate.

Thursday November 19th

TITLE: A priori estimates and sharp existence results for the p-Lapalce equation
SPEAKER: Karthik Adimurthi, LSU
TIME: 2:10–3:00pm
ROOM: Ayres 114
Abstract: (see pdf)

Friday November 20th

TITLE:  Sensitivity analysis of parameter estimation and introduction of SimLab
SPEAKER: Mustafa Elmas, UTK
TIME: 10:10 – 11:00 am
ROOM: Ayres 405

TITLE:  The Interplay of Operator Theory and Function Theory, Part II
SPEAKER: James Sunkes, UTK
TIME: 2:30pm
ROOM: BU 476
In this talk, we will continue the theme of the interplay of operators and functions by discussing Hankel operators. Using Beurling's Theorem (proven last time), I will prove that every invariant subspace of multiplication by z on the Hardy space is the kernel of a Hankel operator. I will then discuss a generalization of this result by Dr. Richter and myself to the Drury-Arveson space. In the remaining time, I will discuss the applications of our result to other aspects of function theory in the Drury-Arveson space.

COLLOQUIUM - Cancelled this week

If you are interested in giving or arranging a talk for one of our seminars or colloquiums, please review our calendar.

If you have questions, or a date you would like to confirm, please contact colloquium AT math DOT utk DOT edu



last updated: February 2016

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