Combinatorics Seminar - Stefan Felsner
16:00-18:00
Speaker: Stefan Felsner
Title: Combinatorics of Pseudocircle Arrangements
Abstract: In this talk we survey results for pseudocircle arrangements. Along the way we present several open problems.
Among others we plan to touch the following topics:
* The taxonomy of classes of pseudocircle arrangements.
* The facial structure with emphasis on triangles and digons.
* Circularizability.
* Coloring problems for pseudocircle arrangements.
The talk includes work of Grünbaum, Snoeyink, Pinchasi, Scheucher, and others.