The Totally Nonnegative Part of G/P is a CW Complex
نویسندگان
چکیده
منابع مشابه
A proof of Björner’s totally nonnegative conjecture
The McMullen Correspondence gives a linear dependence between Msequences of length ⌊ d 2 ⌋+1 and f–vectors of simplical d–polytopes. Denote the transfer matrix between g and f by Md. Recently, Björner proved that any 2×2–minor of Md is nonnegative and conjectured that the same would be true for arbitrary minors. In this paper we answer the question in the affirmative.
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Article history: Received 11 January 2008 Available online 24 September 2008
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ژورنال
عنوان ژورنال: Transformation Groups
سال: 2008
ISSN: 1083-4362,1531-586X
DOI: 10.1007/s00031-008-9024-y