A collection of sets related to the tutte polynomial of a matroid
A collection of sets related to the tutte polynomial of a matroid
复制标题
与拟阵的 tutte 多项式相关的集合的集合
DOI:
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发表时间:
1984
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影响因子:
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通讯作者:
J. Dawson
中科院分区:
文献类型:
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作者:
J. Dawson
It is known that if we order the edges of a graph, or more generally, elements of a matroid, then each spanning forest, or basis, B has a subset ψ(B) of "internally passive" elements, and for each forest, or independent set, F, there is a unique basis B such that ψ(B) ⊆ F ⊆ B. In the context of matroids generally, we examine the structure of the collection of sets {ψ(B) : B is a basis}, particularly looking at the sequence of numbers of these sets of each cardinality, which we conjecture is log-concave.