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Relations between M\"obius and coboundary polynomial

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arxiv 1202.3303 v1 pith:LIYDTZPO submitted 2012-02-15 math.CO

classification math.CO
keywords polynomialcoboundarymatroidobiuscasesanswerdetermineknown
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It is known that, in general, the coboundary polynomial and the M\"obius polynomial of a matroid do not determine each other. Less is known about more specific cases. In this paper, we will try to answer if it is possible that the M\"obius polynomial of a matroid, together with the M\"obius polynomial of the dual matroid, define the coboundary polynomial of the matroid. In some cases, the answer is affirmative, and we will give two constructions to determine the coboundary polynomial in these cases.

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  1. Graph theoretic properties of Speyer's matroid polynomial $g_M(t)$

    math.CO 2025-06 accept novelty 7.0 of 10

    For graphic and cographic matroids, the derivative g'_M(-1) equals (-1)^{c(M)-1} c(M), and computational data suggests many new properties of the coefficient N2.

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