Abstract for the talk on 14.11.2017 (10:00 h)

Seminar on Nonlinear Algebra

Julia Heller (Karlsruhe Institute of Technology)
Generalized non-crossing partitions and buildings
Attention: this talk has to be cancelled
14.11.2017, 10:00 h, MPI für Mathematik in den Naturwissenschaften Leipzig, E1 05 (Leibniz-Saal)

For every finite reflection group W, the noncrossing partitions NC(W) are a lattice in the absolutely ordered group W. In the case of the symmetric group, T. Brady and J. McCammond showed that the order complex of NC(W) embeds into a spherical building. In joint work with P. Schwer, we generalized the theorem for all finite reflection groups. Interpreting NC(W) as a subcomplex of a spherical building now enables us to better understand the building-like structure of NC(W).

 

13.11.2017, 09:26