Discussiones Mathematicae Graph Theory 17(2)
(1997) 301-309
DOI: https://doi.org/10.7151/dmgt.1057
ISOMORPHIC COMPONENTS OF KRONECKER PRODUCT OF BIPARTITE GRAPHS
Pranava K. Jha Department of Computer Engineering |
Sandi Klavžar Department of Mathematics, PEF, University of Maribor |
Abstract
Weichsel (Proc. Amer. Math. Soc. 13 (1962) 47-52) proved that the Kronecker product of two connected bipartite graphs consists of two connected components. A condition on the factor graphs is presented which ensures that such components are isomorphic. It is demonstrated that several familiar and easily constructible graphs are amenable to that condition. A partial converse is proved for the above condition and it is conjectured that the converse is true in general.
Keywords: Kronecker product, bipartite graphs, graph isomorphism.
1991 Mathematics Subject Classification: 05C60.
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