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Current and Recent Colloquia

Distinguished Colloquium
Tuesday, August 26, at 3 p.m.
Auditorium SN-2109

Victor Kac

Massachusetts Institute of Technology


“Ramanujan mock theta function and representations of
infinite-dimensional Lie superalgebra”

Abstract. In his last letter to Hardy in 1920, Ramanujan listed 17 functions, which he called "mock theta functions" since they behave like theta functions but have no modular invariance properties of theta functions. Since then there have been substantial progress in understanding of mock theta functions.
About 10 years ago, Zwegers introduced non-holomorphic corrections, which made these functions modular. In the recent work with Wakimoto, we linked mock theta functions to representation theory of affine Lie superalgebras. This in turn sheds new light on the theory of mock theta functions.

 

On November 28, 2012 from 1-2 pm in room HH-3017, Dr. Yuanlin Li (Brock University) gave an AAC Colloquium talk "Zero-divisor Graphs of Group Rings". This talk is joint with Dr. Farid Aliniaeifard (Brock University).

The abstract for this talk is available here.

 

On February 1, 2012, Dr. Eduardo Martinez-Pedroza (Memorial University) gave an AAC Colloquium Talk "Residual finiteness, subgroup separability and non-positively curved groups"

In this talk the notions of residual finiteness and subgroup separability were discussed in connection with non-positively curved groups. Research on non-positively curved groups is motivated by the study of lattices in real rank one semi-simple Lie groups and manifold topology. Open questions, motivation, and some of my work in the area were discussed.

 

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