Arithmetic of Marked Order Polytopes, Monotone Triangle Reciprocity, and Partial Colorings
Arithmetic of Marked Order Polytopes, Monotone Triangle Reciprocity, and Partial Colorings
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标记序多面体、单调三角形互易和部分着色的算术
DOI:
10.1137/130944849
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Raman Sanyal
中科院分区:
文献类型:
--
作者:
Katharina Jochemko;Raman Sanyal
For a pair of posetsand an order preserving map, the marked order polytope parametrizes the order preserving extensions ofto. We show that the function counting integer-valued extensions is a piecewise polynomial inand we prove a reciprocity statement in terms of order reversing maps. We apply our results to give a geometric proof of a combinatorial reciprocity for monotone triangles due to Fischer and Riegler [J. Combin. Theory Ser. A, 120 (2013), pp. 1372--1393] and we consider the enumerative problem of counting extensions of partial graph colorings of Herzberg and Murty [Notices Amer. Math. Soc., 54 (2007), pp. 708--717].
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DOI:
10.1016/0097-3165(83)90068-7
发表时间:
1983
期刊:
J. Comb. Theory A
影响因子:
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作者:
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DOI:
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发表时间:
2011
期刊:
J. Comb. Theory A
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作者:
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