Vortrag von Alexander Rahm (Galway, Irland)
Discrete groups and torsion subcomplexes I
| What |
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|---|---|
| When |
Apr 15, 2013 from 10:15 AM to 11:45 AM |
| Where | Raum 218, Eckerstr. 1 |
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Alexander Rahm will give a series of four talks on discrete groups and
torsion subcomplexes. Torsion subcomplexes are a method to understand
the torsion in the homology of groups. In the case of Bianchi groups,
i.e. PSL_2 over imaginary number rings, one can establish a close
connection between the geometry of the group acting on hyperbolic
3-space and the arithmetic of the underlying number ring. The lecture
series will explain the background and applications of torsion
subcomplexes.
- Bianchi groups and hyperbolic space
- Homology of arithmetic groups
- Coxeter groups and equivariant K-homology
- Chen-Ruan orbifold cohomology in mathematical physics
Room and time tba.