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The Chromatic Number of Graph Powers

Published online by Cambridge University Press:  14 February 2002

NOGA ALON  and
BOJAN MOHAR
NOGA ALON
Affiliation:
Department of Mathematics, Tel Aviv University, Tel Aviv, Israel (e-mail: [email protected])
BOJAN MOHAR
Affiliation:
Department of Mathematics, University of Ljubljana, 1111 Ljubljana, Slovenia (e-mail: [email protected])
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Abstract

It is shown that the maximum possible chromatic number of the square of a graph with maximum degree d and girth g is (1 +o(1))d2 if g = 3, 4, 5 or 6, and is Θ(d2 / log d) if g [ges ] 7. Extensions to higher powers are considered as well.

Type
Research Article
Information
Combinatorics, Probability and Computing , Volume 11 , Issue 1 , January 2002 , pp. 1 - 10
Copyright
2002 Cambridge University Press

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