Archived Events

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Green's functions on Riemann surfaces I [2]

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Talk [3]

Speaker:

Don Zagier

Date:

Mon, 2013-06-10 12:00 - 13:30

Location:

MPIM Lecture Hall [4]

Parent event:

IMPRS Minicourse [5]

Fibrations and Adjunctions for quasicategories [6]

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Talk [3]

Speaker:

Daniel Brügmann

Date:

Fri, 2013-06-07 13:30 - 15:00

Location:

MPIM Seminar Room [7]

Parent event:

Student seminar on higher categories [8]

Read more [6]

The Fourier decomposition on the Chow ring of certain hyperkaehler fourfolds [9]

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Talk [3]

Speaker:

Charles Vial

Affiliation:

Cambridge

Date:

Thu, 2013-06-06 10:30 - 12:00

Location:

MPIM Seminar Room [7]

Parent event:

Seminar Algebraic Geometry (SAG) [10]

Using a codimension-1 algebraic cycle obtained from the Poincare line bundle, Beauville defined the Fourier transform on the Chow ring of an abelian variety A and showed that the Fourier transform induces a decomposition of the Chow ring CH_*(A) which is compatible with its ring structure. We prove that a similar decomposition exists for certain hyperkaehler fourfolds by using a codimension-2 algebraic cycle representing the Beauville--Bogomolov bilinear form. This is joint work with Mingmin Shen.

A theorem of Narasimhan and Seshadri (following Donaldson) [11]

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Talk [3]

Speaker:

S. Lanzat

Date:

Mon, 2013-06-03 14:15 - 15:45

Location:

MPIM Seminar Room [7]

Parent event:

IMPRS-seminar on moduli of G-bundles [12]

Workshop on Geometry and topology of smooth 4-manifolds [13]

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Workshop [14]

Organiser(s):

Inanc Baykur

Date:

Mon, 2013-06-03 (All day) - Fri, 2013-06-07 (All day)

Details:

Program [15] and Abstracts [16] of Workshop on Geometry and topology of smooth 4-manifolds

$\Theta_n$-spaces [17]

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Talk [3]

Speaker:

Karol Szumilo

Date:

Fri, 2013-05-31 13:30 - 15:00

Location:

MPIM Lecture Hall [4]

Parent event:

Student seminar on higher categories [8]

Describe the category $\Theta_n$.
$\Theta_n$-spaces and their properties.
The comparison map to iterated complete Segal spaces.

https://docs.google.com/document/d/1llPzCxlhWSucYymRenInm861KK-QVJxQS0MeEQZdjE8/edit [18]

Topos Theory [19]

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Talk [3]

Speaker:

D. Carchedi

Date:

Wed, 2013-05-29 16:15 - 18:00

Location:

MPIM Seminar Room [7]

Parent event:

Master's Course on Topos Theory [20]

Kudla's modularity conjecture for cycles of codimension 2 [21]

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Talk [3]

Speaker:

Martin Raum

Affiliation:

ETH

Date:

Wed, 2013-05-29 14:15 - 15:15

Location:

MPIM Lecture Hall [4]

Parent event:

Number theory lunch seminar [22]

We establish Kudla's modularity conjecture for the generating function 
of special cycles of codimension 2.  The proof is based on a 
convergence result for formal Fourier Jacobi expansions.  We define 
such expansions in some simple cases, and outline the approach taken to 
show that they always converge.  Finally, we showcase the connection to 
previous results by Zhang, which yields the desired proof of Kudla's 
conjecture.

Tea & Discussions [23]

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Talk [3]

Date:

Tue, 2013-05-28 15:30 - 17:00

Location:

MPIM Tea Room [24]

Parent event:

Mathematische Arbeitstagung 2013 [25]

Comparing symplectic and complex geometry [26]

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Talk [3]

Speaker:

Dusa McDuff

Affiliation:

Barnard College, Columbia University

Date:

Tue, 2013-05-28 14:30 - 15:30

Location:

MPIM Lecture Hall [4]

Parent event:

Mathematische Arbeitstagung 2013 [25]

There are many deep connections between symplectic and complex geometry, ranging from the phenomena of mirror symmetry to consequences of the fact that a symplectic manifold is a flabby kind of Kähler manifold in which the complex structure has lost its integrability. This talk will explore the latter relationship, explaining, for example, how the infinite number of complex structures on the product of projective lines (the famous family of Hirzebruch surfaces) is reflected in the symplectic world.

Read more [26]