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math.CO2008
Graph Powers and Graph Homomorphisms
Hossein Hajiabolhassan, Ali Taherkhani
In this paper we investigate some basic properties of fractional powers. In this regard, we show that for any rational number , $G^{2r+1\over 2s+1}\l…
math.CO2007★ 1 cited
On Colorings of Graph Powers
Hossein Hajiabolhassan
In this paper, some results concerning the colorings of graph powers are presented. The notion of helical graphs is introduced. We show that such graphs are hom-universal with resp…