4 citations · 10 across the 3 of their papers we have counts for
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math.CO2009★ 4 cited
Toroidal Embeddings of Right Groups
Kolja Knauer, Ulrich Knauer
In this note we study embeddings of Cayley graphs of right groups on surfaces. We characterize those right groups which have a toroidal but no planar Cayley graph, such that the ge…
math.CO2008★ 4 cited
Distributive Lattices, Polyhedra, and Generalized Flow
S. Felsner, K. Knauer
A D-polyhedron is a polyhedron such that if are in then so are their componentwise max and min. In other words, the point set of a D-polyhedron forms a distributive l…
math.CO2008★ 2 cited
ULD-Lattices and Delta-Bonds
S. Felsner, K. Knauer
We provide a characterization of upper locally distributive lattices (ULD-lattices) in terms of edge colorings of their cover graphs. In many instances where a set of combinatorial…