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arXiv 1609.03049math.CO
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图提升或双环提升拟阵类的排除子阵

The excluded minors for the class of matroids that are graphic or bicircular lift

Rong Chen

摘要:

双环提升拟阵是一类定义在图的边集上的拟阵。对于一个给定的图$G$,其双环提升拟阵$L(G)$的圈是$G$的至少包含两个圈的子图的边集,并且关于这个性质是最小的.对于$G$的每个循环$C$,由于$L(G)/C$是图的,而大多数图拟阵不是双环提升的,所以双环提升拟阵类不是小闭的。在本文中,我们证明了类拟阵是图形或双循环升降机有一个有限的列表中排除的儿童。

英文摘要:

Bicircular lift matroids are a class of matroids defined on the edge set of a graph. For a given graph $G$, the circuits of its bicircular lift matroid $L(G)$ are the edge sets of those subgraphs of $G$ that contain at least two cycles, and are minimal with respect to this property. For each cycle $C$ of $G$, since $L(G)/C$ is graphic and most graphic matroids are not bicircular lift, the class of bicircular lift matroids is not minor-closed. In this paper, we prove that the class of matroids that are graphic or bicircular lift has a finite list of excluded minors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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