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Unicyclic graphs with bicyclic inverses

Swarup Kumar Panda — 2017

Czechoslovak Mathematical Journal

A graph is nonsingular if its adjacency matrix A ( G ) is nonsingular. The inverse of a nonsingular graph G is a graph whose adjacency matrix is similar to A ( G ) - 1 via a particular type of similarity. Let denote the class of connected bipartite graphs with unique perfect matchings. Tifenbach and Kirkland (2009) characterized the unicyclic graphs in which possess unicyclic inverses. We present a characterization of unicyclic graphs in which possess bicyclic inverses.

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