Abstract
The perfect matching graph of a graph G, denoted by M(G), has one vertex for each perfect matching of G and two matchings are adjacent if their symmetric difference is a cycle of G. Let C be a family of cycles of G. The perfect matching graph defined by C is the spanning subgraph M(G, C) of M(G) in which two perfect matchings L and N are adjacent only if \(L \varDelta N\) lies in C. We give a necessary condition and a sufficient condition for M(G, C) to be connected. We also give examples of graphs and of families of cycles for which the sufficient condition is satisfied.
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Partially supported by CONACyT México, Projects 169407, 178910 and 183210.
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Figueroa, A.P., Fresán-Figueroa, J. & Rivera-Campo, E. On the perfect matching graph defined by a set of cycles. Bol. Soc. Mat. Mex. 23, 549–556 (2017). https://doi.org/10.1007/s40590-015-0079-1
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DOI: https://doi.org/10.1007/s40590-015-0079-1