2 papers
cs.CG2026
Signotopes Induce Unique Sink Orientations on Grids
Sandro M. Roch
A unique sink orientation (USO) is an orientation of the edges of a polytope in which every face contains a unique sink. For a product of simplices , Fels…
cs.CG2025
Arrangements of Pseudocircles: On Digons and Triangles
Stefan Felsner, Sandro Roch, Manfred Scheucher
In this article, we study the cell-structure of simple arrangements of pairwise intersecting pseudocircles. The focus will be on two problems of Grünbaum (1972). First, we discuss…