Flag-symmetric and Locally Rank-symmetric Partially Ordered Sets
نویسندگان
چکیده
منابع مشابه
Flag-symmetric and locally rank-symmetric partially ordered sets
For every finite graded poset P with 0̂ and 1̂ we associate a certain formal power series FP (x) = FP (x1, x2, . . .) which encodes the flag f -vector (or flag h-vector) of P . A relative version FP/Γ is also defined, where Γ is a subcomplex of the order complex of P . We are interested in the situation where FP or FP/Γ is a symmetric function of x1, x2, . . .. When FP or FP/Γ is symmetric we con...
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ژورنال
عنوان ژورنال: The Electronic Journal of Combinatorics
سال: 1995
ISSN: 1077-8926
DOI: 10.37236/1264