WHEN: 12.02.15 at 14:15

WHERE: Seminar Room, Arnimallee 2, FU Berlin

Speaker: Philip Brinkmann (FU Berlin)

Flag Vector Spaces of Polytopes, Spheres and Eulerian Lattices

This talk deals with open questions concerning the flag vector spaces of

polytopes, strongly regular spheres and Eulerian lattices. The latter two

are natural generalizations of polytopes, since polytope boundaries are

strongly regular spheres, and the combinatorial structure behind forms

Eulerian lattices. The open questions discussed concern characteristics

and description of the sets of flag-vectors that belong to these objects.

Emphasis lies here on the distinguishing of the sets of flag-vectors of

the three classes of objects. For dimension $d=4$ this relates to the

parameters fatness and complexity, which are introduced and studied.

### Time & Location

Feb 12, 2015 | 02:15 PM

Seminar Room, Arnimallee 2, FU Berlin