Martin Winter: Capturing Polytopal Symmetries in the Edge-Graph
Time: Wed 2021-03-24 10.15 - 11.15
Location: Zoom meeting ID: 654 5562 3260
Lecturer: Martin Winter (TU Chemnitz)
Abstract: In general dimension the edge-graph of a polytope carries very little
information about the polytope itself.
For example, the edge-graph can have many more symmetries than the
polytope or any realization thereof.
Using techniques from spectral graph theory and convex geometry we
show that the edge-graph of every polytope
can be colored so that every combinatorial symmetry of the colored
edge-graph extends to a geometric symmetry of the polytope.
Zoom link: https://kth-se.zoom.us/j/65455623260
Zoom meeting ID: 654 5562 3260