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math.CO2026
Rings are -bounded
Sara Asensio, Ignacio García-Marco, Kolja Knauer
We prove that there is a function such that for the zero-divisor graph of any ring , if the clique number is finite. On the on…
math.CO2026
Coloring semiminimal Cayley Graphs
Ignacio García-Marco, Kolja Knauer, Giuliamaria Menara
In 1978 Babai raised the question whether all semiminimal Cayley graphs have bounded chromatic number. In this paper we show that semiminimal Cayley graphs of abelian and generaliz…