Mathematische Gesellschaft What cohomology of arithmetic groups, orbifold cohomology and topological K-theory have in common |  |
Speaker:Dr. Alexander D. Rahm, l'Université du Luxembourg, Mathematics Research Unit
Organizer:Mathematisches Institut
Details:
Ad-hoc reduction tricks for torsion subcomplexes have been known and used by some experts at least since the 1970's for computations on the cohomology of arithmetic groups. But traditionally, these tricks were not written up, and had to be re-discovered. The contemporary viewpoint is that these tricks fit into a technique of torsion subcomplex reduction that is powerful enough to shift away from example computations, in favour of establishing general dimension formulas; and also can be used outside the cohomology of arithmetic groups, for instance for orbifold cohomology and topological K-theory. These applications have been made precise in a series of papers summarized in the speaker's habilitation thesis, which will be defended four weeks after this talk.
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Type:Talk
Language:English
Category:Research
Host:Dr. Claudia Schoemann
External link:http://www.uni-goettingen.de/de/194591.html
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Direct link to event:https://events.goettingen-campus.de/event?eventId=4408
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