Arrangements defined by unitary reflection groups
Arrangements defined by unitary reflection groups
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由单一反射组定义的排列
DOI:
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发表时间:
1982
期刊:
影响因子:
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通讯作者:
Louis Solomon
中科院分区:
文献类型:
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作者:
P. Orlik;Louis Solomon
Let V be a complex vector space of dimension I. An arrangement in V is a finite set d of hyperplanes, all containing the origin. Let L = L ( d ) be the set of intersections of elements of ~r Partially order L by reverse inclusion so that L has V as its minimal element and d as its set of atoms. The poset L is a finite geometric lattice with rank function r(X)= dim V/X, XE L. Without loss of generality we assume that N H ~ , H =0 is the maximal element of L and thus L has rank I. The characteristic polynomial z(L, t) of L is defined by