Siegel der Universität Augsburg

Universität Augsburg
Institut für Mathematik

 Siegel der Universität Augsburg

 

Oberseminar Differentialgeometrie

 

Professor Dr. Matthias Franz
University of Western Ontario
 
spricht am
 
Montag, 27. April 2015
 
um
 
16:00 Uhr
 
im
 
Raum 2004 (L1)
 
über das Thema:
 

»Big polygon spaces and syzygies in equivariant cohomology«

Abstract:
Polygon spaces are configuration spaces of polygons with prescribed edge lengths. We present a related family of compact orientable manifolds, called big polygon spaces. They come with a canonical torus action, whose fixed point set is a polygon spaces. Big polygon spaces are particularly interesting because they provide the only known examples of maximal syzygies in equivariant cohomology. I will therefore start by reviewing the theory of syzygies in equivariant cohomology for actions of compact connected Lie groups as well as its relation to the equivariant Poincaré pairing and the "GKM method"

 

Hierzu ergeht herzliche Einladung.
 

Kaffee, Tee und Gebäck eine halbe Stunde vor Vortragsbeginn im Raum 2006 (L1).


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