Decomposition theorem for the cd-index of Gorenstein* posets

被引：0

作者：

Richard Ehrenborg

Kalle Karu

机构：

[1] University of Kentucky,Department of Mathematics

[2] University of British Columbia,Department of Mathematics

来源：

Journal of Algebraic Combinatorics | 2007年 / 26卷

关键词：

-index; Gorenstein; posets; Decomposition theorem; Lattices; Subdivisions;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

We prove a decomposition theorem for the cd-index of a Gorenstein* poset analogous to the decomposition theorem for the intersection cohomology of a toric variety. From this we settle a conjecture of Stanley that the cd-index of Gorenstein* lattices is minimized on Boolean algebras.

引用

页码：225 / 251

页数：26

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