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Regular Matroids with Graphic Cocircuits (0909.5033v1)
Published 28 Sep 2009 in cs.DM
Abstract: We introduce the notion of graphic cocircuits and show that a large class of regular matroids with graphic cocircuits belongs to the class of signed-graphic matroids. Moreover, we provide an algorithm which determines whether a cographic matroid with graphic cocircuits is signed-graphic or not.
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