Homomorphisms and related contractions of graphs

Robert D. Girse and Richard A. Gillman

International Journal of Mathematics and Mathematical Sciences, 1988, vol. 11, 1-6

Abstract:

For every homomorphism ϕ of a graph G there exists a contraction θ ϕ on G ¯ , the complement of G . Here we study the graph equation ϕ ( G ) = θ ϕ ( G ¯ ) . In the course of our work we show that Hadwiger's Conjecture is true for every self-complementary graph.

Date: 1988
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jijmms:798179

DOI: 10.1155/S0161171288000146

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