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Seminars and Colloquiums
for the week of January 7, 2019


Joseph Daws, University of Tennessee

Jea-hyun Park, University of Tennessee
Scott Atkinson, Vanderbilt University

Tuesday, 1/8

SPEAKER: Joseph Daws, University of Tennessee
TIME: 10:00 AM
ROOM: Ayres 114
His committee consists of Professors: Webster (Chair), and Karakashian, Salgado, and Wise.

Wednesday, 1/9

SPEAKER: Jea-hyun Park, University of Tennessee
TIME: 2:00 PM
ROOM: Ayres 406
His committee consists of Professors: Salgado/Wise (Co-chairs), and Feng.

In view of Analysis faculty candidate colloquia during January, the Analysis Seminar is suspended until February. Graduate students working or thinking of working in analysis are STRONGLY encouraged to attend the talks and the open sessions scheduled for the analysis candidates.

TITLE: A convex structure on representations of C*-algebras
SPEAKER: Scott Atkinson, Vanderbilt University
TIME: 3:30 PM-4:30 PM
ROOM: Ayres 405
Given a separable unital C*-algebra A, we associate to it an invariant built out of representations of A in a II_1-factor von Neumann algebra (an infinite-dimensional analog of a matrix algebra) modulo appropriate symmetries. This invariant is endowed with a natural convex structure and can be perceived as a non-commutative generalization of the simplex of Borel probability measures on a compact Hausdorff space.

After sketching the construction of this invariant, we will discuss the connections (and disconnections) between certain convex geometric concepts and operator algebraic notions. For instance, we can ask the following questions. How can we algebraically describe an extreme point or a face? What is the geometric interpretation of an ideal? How do properties such as amenability manifest themselves in this invariant? We will discuss these questions along with some purely operator algebraic insights stemming from this invariant, and we will conclude with open problems and future directions.

Thursday, 1/10

TITLE: Mathematical Biology Seminar – Organizational Lunch Meeting
TIME: 11:45 AM-12:30 PM
ROOM: NIMBioS Participant Break Room (Claxton 101)

Pizza lunch served.


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

Past notices:

Winter Break

Dec. 10, 2018

Dec. 3, 2018

Nov. 26, 2018

Nov. 19, 2018

Nov. 12, 2018

Nov. 5, 2018

Oct. 29, 2018

Oct. 22, 2018

Oct. 15, 2018

Oct. 8, 2018

Oct. 1, 2018

Sept. 24, 2018

Sept. 17, 2018

Sept. 10, 2018

Sept. 3, 2018

Aug. 27, 2018



last updated: January 2019

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