Log-Concave Polynomials III: Mason's Ultra-Log-Concavity Conjecture for Independent Sets of Matroids
Log-Concave Polynomials III: Mason's Ultra-Log-Concavity Conjecture for Independent Sets of Matroids
复制标题
对数凹多项式 III:梅森独立拟阵集的超对数凹性猜想
DOI:
10.1090/proc/16724
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
C. Vinzant
中科院分区:
文献类型:
--
作者:
Nima Anari;Kuikui Liu;S. Gharan;C. Vinzant
We give a self-contained proof of the strongest version of Mason’s conjecture, namely that for any matroid the sequence of the number of independent sets of given sizes is ultra log-concave. To do this, we introduce a class of polynomials, called completely log-concave polynomials, whose bivariate restrictions have ultra log-concave coefficients. At the heart of our proof we show that for any matroid, the homogenization of the generating polynomial of its independent sets is completely log-concave.
影响因子:
4.9
作者:
Adiprasito, Karim;Huh, June;Katz, Eric
通讯作者:
Katz, Eric