Generic and special constructions of pure O‐sequences

Generic and special constructions of pure O‐sequences
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纯 O 序列的一般和特殊结构

DOI:
10.1112/blms/bdu047
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发表时间:
2012
影响因子:
0.9
通讯作者:
M. Varbaro
M. Varbaro
中科院分区:
数学3区
文献类型:
--
作者:
A. Constantinescu;Thomas Kahle;M. Varbaro

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证明了三类拟阵的Stanley-Reisner环的h-向量是纯O-序列。这些类是(a)拟阵的截断,或更一般的Cohen-Macaulay复形,(B)拟阵的对偶是(秩+2)分的,和(c)Cohen-Macaulay型的拟阵至多5。计算搜索的一个反例斯坦利猜想的后果进行了讨论。
It is shown that the h ‐vectors of Stanley–Reisner rings of three classes of matroids are pure O‐sequences. The classes are (a) matroids that are truncations of matroids, or more generally of Cohen–Macaulay complexes, (b) matroids whose dual is (rank+2) ‐partite, and (c) matroids of Cohen–Macaulay type at most 5. Consequences for the computational search for a counterexample to a conjecture of Stanley are discussed.
区域拓扑代数
DOI: 10.1016/j.aim.2011.02.012
发表时间: 2011
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