On Chromatic Numbers of Two Extensions of Planar Graphs
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DOI: 10.1007/s40306-018-0252-5
Abstract: In this paper, the acyclic chromatic and the circular list chromatic numbers of a simple H-minor free graph G is considered, where H ∈{K5,K3,3}. It is proved that the acyclic chromatic number (resp. the circular… read more here.
Keywords: minor free; number; chromatic number; numbers two ... See more keywords
On the Chromatic Numbers of Rational Spaces
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DOI: 10.1134/s0001434618010133
Abstract: We consider the notion of affine chromatic number of a rational space introduced by E. I. Ponomarenko and A. M. Raigorodskii and describe its relationship with chromatic numbers of rational spaces. read more here.
Keywords: chromatic numbers; numbers rational; rational spaces;