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math.CO2015★ 1 cited
Even Orientations and Pfaffian graphs
Marièn Abreu, Domenico Labbate, Federico Romaniello +1
We give a characterization of Pfaffian graphs in terms of even orientations, extending the characterization of near bipartite non--pfaffian graphs by Fischer and Little \cite{FL}.…
math.CO2015
Characterization of graphs without even -orientations
M. Abreu, D. Labbate, F. Romaniello +1
A graph is -extendible if every edge belongs to at least one -factor of . Let be a graph with a -factor . Then an even -orientation of is an orientati…