Log-concavity of matroid h-vectors and mixed Eulerian numbers
Log-concavity of matroid h-vectors and mixed Eulerian numbers
复制标题
拟阵 h 向量和混合欧拉数的对数凹性
DOI:
10.1215/00127094-2023-0021
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发表时间:
2020
影响因子:
2.5
通讯作者:
Dennis Tseng
中科院分区:
文献类型:
--
作者:
A. Berget;Hunter Spink;Dennis Tseng
For any matroid $M$, we compute the Tutte polynomial $T_M(x,y)$ using the mixed intersection numbers of certain tautological classes in the combinatorial Chow ring $A^\bullet(M)$ arising from Grassmannians. Using mixed Hodge-Riemann relations, we deduce a strengthening of the log-concavity of the h-vector of a matroid complex, improving on an old conjecture of Dawson whose proof was announced recently by Ardila, Denham and Huh.
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影响因子:
3.9
作者:
Ardila, Federico;Denham, Graham;Huh, June
通讯作者:
Huh, June
影响因子:
4.9
作者:
Adiprasito, Karim;Huh, June;Katz, Eric
通讯作者:
Katz, Eric
影响因子:
1.7
作者:
Tom Braden;June Huh;Jacob P. Matherne;N. Proudfoot;Botong Wang
通讯作者:
Tom Braden;June Huh;Jacob P. Matherne;N. Proudfoot;Botong Wang
影响因子:
0.6
作者:
Fink, Alex;Speyer, David E.;Woo, Alexander
通讯作者:
Woo, Alexander