Consortium Distinguished Lecture Series

2 02, 2022

Sampling with Minimal Energy: A talk in commemoration of Bl. Sendov’s 90th birth date.

2022-02-07T11:04:25+02:00February 2nd, 2022|Consortium Distinguished Lecture Series|

The International Center for Mathematical Sciences at the Institute of Mathematics and Informatics (ICMS–Sofia) will commemorate the 90th anniversary of the birth of Prof. Sendov with a special talk by Edward Saff from Vanderbilt University, USA - "Sampling with Minimal Energy: A talk in commemoration of Bl. Sendov's 90th birth date."

11 11, 2021

From Turaev to Rokhlin via VOA Characters and Curve Counting, by Sergey Gukov

2021-11-23T21:48:28+02:00November 11th, 2021|Consortium Distinguished Lecture Series|

These lectures will present a board survey of recent work on new q-series invariants of 3-manifolds labeled by Spin-C structures. While the original motivation for studying these invariants is rooted in topology, they exhibit a number of unexpected properties and connections to other areas of mathematics, e.g. turn out to be characters of logarithmic vertex algebras. The integer coefficients of these q-series invariants can be understood as the answer to a certain enumerative problem, and when q tends to special values these invariants relate to other invariants of 3-manifolds labeled by Spin and Spin-C structures.

3 11, 2021

Geometric Langlands, by Dennis Gaitsgory

2021-11-23T21:45:56+02:00November 3rd, 2021|Consortium Distinguished Lecture Series|

We will start these series by reviewing the general framework of geometric Langlands correspondence, and state the main conjectures in the de Rham and Betti settings. We will also recall V. Lafforgue's theorem about the spectral decomposition in the classical Langlands over function fields. We will then proceed to the formulation of "restricted" Langlands correspondence, which unifies the different contexts. We will state the restricted version of the geometric Langlands conjecture, and explain its relation with the classical Langlands conjecture via the operation of categorical trace.

1 11, 2021

Lefschetz theorems beyond Hodge structures, by Karim Adiprasito

2021-11-08T13:31:34+02:00November 1st, 2021|Consortium Distinguished Lecture Series|

One of the key developments in combinatorics and algebra of recent years has been the discovery of Lefschetz principles beyond Hodge structures, resolving several long-standing conjectures. I will provide an overview of recent developments, and discuss joint work with Johanna Steinmeyer, Stavros Papadakis and Vasiliki Petrotou.

26 10, 2021

From Knots to Number Theory, by Don Bernard Zagier

2021-11-08T13:31:58+02:00October 26th, 2021|Consortium Distinguished Lecture Series|

During the course of the last few years a number of startling connections between quantum invariants of knots and 3-manifolds and high-level number theory have emerged. Already the rigidity theorems of 3-dimensional hyperbolic topology, which have been known for many years, had a quite non-trivial arithmetic content, with the volume of every hyperbolic 3-manifold being linked via the dilogarithm to the so-called Bloch group and algebraic K-theory, and another connection comes from the Kashaev invariant, which is linked via his famous conjecture to the hyperbolic volume but also belongs to the so-called Habiro ring, which is a beautiful number-theoretical object that is not yet well known to number theorists.

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