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Abstracts for Seminar "Arithmetic of Algebraic Groups"

Alternatively have a look at the program.

Cohomology of arithmetic groups - the general scenario

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Speaker: 
Günter Harder
Affiliation: 
MPIM
Date: 
Tue, 2019-10-15 10:15 - 11:45
Location: 
MPIM Lecture Hall

Cohomology of arithmetic groups - A specific -highly non trivial- example

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Speaker: 
Günter Harder
Affiliation: 
MPIM
Date: 
Tue, 2019-10-22 16:30 - 18:00
Location: 
MPIM Lecture Hall

Cohomology of arithmetic groups - a specific example [continued]

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Speaker: 
Günter Harder
Affiliation: 
MPIM
Date: 
Tue, 2019-10-29 10:15 - 11:45
Location: 
MPIM Lecture Hall

Denominators of Eisenstein cohomology classes

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Speaker: 
Christian Kaiser
Affiliation: 
MPIM
Date: 
Tue, 2019-11-05 10:15 - 12:00
Location: 
MPIM Lecture Hall

Denominators of Eisenstein cohomology classes - continued -

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Speaker: 
Christian Kaiser
Affiliation: 
MPIM
Date: 
Tue, 2019-11-12 10:15 - 12:00
Location: 
MPIM Lecture Hall

Cohomology of arithmetic groups and Eisenstein series (I) - some geometric aspects at infinity

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Speaker: 
Joachim Schwermer
Affiliation: 
MPIM
Date: 
Tue, 2019-11-19 10:15 - 12:00
Location: 
MPIM Lecture Hall

Cohomology of arithmetic groups and Eisenstein series (II) - construction of non-vanishing cohomology classes

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Speaker: 
Joachim Schwermer
Affiliation: 
MPIM
Date: 
Tue, 2019-11-26 10:15 - 12:00
Location: 
MPIM Lecture Hall

Cohomology of arithmetic groups - the general scenario Part III

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Speaker: 
Günter Harder
Affiliation: 
MPIM
Date: 
Tue, 2019-12-03 10:15 - 12:00
Location: 
MPIM Lecture Hall

Geometric construction of homology classes in Riemannian manifolds covered by products of hyperbolic planes

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Speaker: 
Pascal Zschumme
Affiliation: 
KIT, Karlsruhe
Date: 
Tue, 2019-12-10 10:15 - 12:00
Location: 
MPIM Lecture Hall

We study the homology of Riemannian manifolds of finite volume that are covered by a product of r copies  of the hyperbolic plane. Using a variation of a method developed by Avramidi and Nyguen-Phan, we show that any such manifold  M possesses, up to finite coverings, an arbitrarily large number of compact oriented flat totally geodesic r-dimensional submanifolds whose fundamental classes are linearly independent in the r-th homology group of M.

Construction of some arithmetically defined compact locally symmetric spaces

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Speaker: 
Tyakal Venkataramana
Affiliation: 
Tata Institute/MPIM
Date: 
Fri, 2019-12-13 10:15 - 12:00
Location: 
MPIM Lecture Hall
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