Generalized (P, w)-partitions and generating functions for trees
Generalized (P, w)-partitions and generating functions for trees
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树的广义 (P, w) 划分和生成函数
DOI:
10.1016/s0097-3165(03)00091-8
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发表时间:
2003
期刊:
影响因子:
--
通讯作者:
H. Tagawa
中科院分区:
文献类型:
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作者:
Isao Arima;H. Tagawa
We introduce (P,R)-partitions as a generalization of the (P,ω)-partitions of Stanley. When P is a Gaussian poset the generating function for P-partitions with largest part at most n factors as ∏x∈P1−qg(x)+n1−qg(x)for certain integers g(x). Although trees are not in general Gaussian posets, we show that if P is a tree then R can be chosen so that the generating function for (P,R)-partitions has a similar factorization.