Kazhdan-Lusztig polynomials of fan matroids, wheel matroids, and whirl matroids
Kazhdan-Lusztig polynomials of fan matroids, wheel matroids, and whirl matroids
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风扇拟阵、轮拟阵和旋转拟阵的 Kazhdan-Lusztig 多项式
DOI:
10.1016/j.jcta.2022.105665
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发表时间:
2018-02
期刊:
影响因子:
--
通讯作者:
Arthur L. B. Yang
中科院分区:
文献类型:
--
作者:
Linyuan Lu;Matthew H.Y. Xie;Arthur L. B. Yang
The Kazhdan-Lusztig polynomial of a matroid was introduced by Elias, Proudfoot and Wakefield. The properties of these polynomials need to be further explored. In this paper we prove that the Kazhdan-Lusztig polynomials of fan matroids coincide with Motzkin polynomials, which was conjectured by Gedeon. As a byproduct, we determine the Kazhdan-Lusztig polynomials of graphic matroids of squares of paths. We further obtain explicit formulas of the Kazhdan-Lusztig polynomials of wheel matroids and whirl matroids. We prove the real-rootedness of the Kazhdan-Lusztig polynomials of these matroids, thus providing positive evidence for a conjecture due to Gedeon, Proudfoot and Young. Based on the results on the Kazhdan-Lusztig polynomials, we also determine the Z -polynomials of fan matroids, wheel matroids and whirl matroids, and prove their real-rootedness, thus providing further evidence in support of a conjecture of Proudfoot, Xu, and Young.
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DOI:
10.2307/3606465
发表时间:
1933-07
期刊:
--
影响因子:
--
作者:
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通讯作者:
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影响因子:
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通讯作者:
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通讯作者:
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10.1016/s0012-365x(03)00037-2
发表时间:
2003-09
期刊:
Discret. Math.
影响因子:
--
作者:
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通讯作者:
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DOI:
10.1007/978-1-4613-0163-9
发表时间:
2001-04
期刊:
--
影响因子:
--
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通讯作者:
C. D. Godsil;G. Royle