**Seminars and Colloquiums**

for the week of January 7, 2019

for the week of January 7, 2019

*SPEAKERS*

**Tuesday**

Joseph Daws, University of Tennessee

Wednesday

Jea-hyun Park, University of Tennessee

Scott Atkinson, Vanderbilt University

**Tuesday, 1/8**

**ORAL SPECIALTY EXAMINATION**

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**

**ORAL SPECIALTY EXAMINATION
**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.

**ANALYSIS SEMINAR**

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.

**SPECIAL COLLOQUIUM
**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**

**MATH BIOLOGY SEMINAR**

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 mlangfo5@utk.edu *

**Past notices:**

Winter Break