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.
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页码：225 / 251
页数：26
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