Previous Special Year Seminar

Apr
14
2017

Homological Mirror Symmetry (Mini-Course)

Mirror symmetry for moduli of flat bundles and non-abelian Hodge theory
10:45am

I will discuss a construction of the homological mirror correspondence on algebraic integrable systems arising as moduli of flat bundles on curves. The focus will be on non-abelian Hodge theory as a tool for implementing hyper Kaehler rotations of...

Apr
13
2017

Reading Group on Quantization of BCOV and the Higher-Genus B-Model

Givental's quantization of semi-simple Frobenius manifolds
4:00pm

Givental's quantization formula describes higher genus invariants from genus zero data, the Frobenius manifold. I will describe this quantization and state Teleman's result that this quantization actually describes all semisimple cohomological field...

Apr
13
2017

Reading Group on Quantization of BCOV and the Higher-Genus B-Model

Computing a categorical Gromov-Witten invariant
Andrei Căldăraru
1:00pm

In his 2005 paper "The Gromov-Witten potential associated to a TCFT" Kevin Costello described a procedure for recovering an analogue of the Gromov-Witten potential directly out of a cyclic A-inifinity algebra or category. Applying his construction...

Apr
12
2017

Reading Group on Degeneration of Hodge-de Rham Spectral Sequences

Algebraic proofs of degenerations of Hodge-de Rham complexes
Andrei Căldăraru
3:00pm

In the first half of the talk I shall present a new algebraic proof of a result of Deligne-Illusie about the degeneration of the Hodge-de Rham spectral sequence. The idea is to reduce the main technical point of their proof to a question about the...

Apr
12
2017

Homological Mirror Symmetry (Mini-Course)

Mirror symmetry for moduli of flat bundles and non-abelian Hodge theory
10:45am

I will discuss a construction of the homological mirror correspondence on algebraic integrable systems arising as moduli of flat bundles on curves. The focus will be on non-abelian Hodge theory as a tool for implementing hyper Kaehler rotations of...

Apr
11
2017

Floer Homology and Khovanov Homology Reading Group

Gauge-theoretic and symplectic-topological aspects of the Haydys-Witten equations
Daniel Vitek
10:45am

We'll talk about various dimensional reductions of the HW equations and the connections to (de)categorification as we continue explaining their physical origins. Time permitting we will discuss (conjectural?) relations to Fukaya-Seidel categories.