令人心醉
发表于 2025-3-28 15:32:20
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circuit
发表于 2025-3-28 20:47:09
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不公开
发表于 2025-3-29 00:46:02
Characterizing ,-vectors (Supplemental)ere? Well, for one thing, if there are . vertices there can be at most . edges, since there is at most one edge for every pair of vertices. That is, . This simple observation can be greatly generalized. It turns out there is a sharp upper bound on the number of (. + 1)-faces expressed as a polynomia
事情
发表于 2025-3-29 05:33:47
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窒息
发表于 2025-3-29 09:59:51
Combinatorics for Coxeter groups of types,, and,, 0 and the element. is completely determined by.(1), ., .(.). In one-line notation, we write. = .(1)⋯.(.) with bars to indicate negative numbers. For example, if. is determined by.,.(2) = 4,.(3) = 5,. and.(5) = 2, we write..
Lasting
发表于 2025-3-29 12:10:49
Textbook 2015 numbers from a purely combinatorial point of view, then embarks on a tour of how these numbers arise in the study of hyperplane arrangements, polytopes, and simplicial complexes. Some topics include a thorough discussion of gamma-nonnegativity and real-rootedness for Eulerian polynomials, as well a
Endoscope
发表于 2025-3-29 16:10:49
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Presbyopia
发表于 2025-3-29 20:37:18
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兵团
发表于 2025-3-30 00:01:39
Diastolic Versus Systolic Heart Failureese posets are known as the . and the ., respectively. Our study of the weak order leads naturally to a side trip into the realm of .. This geometric perspective will be useful to have in later parts of the book.
祝贺
发表于 2025-3-30 05:11:30
Der Schatten des Todes in der Dichtung,ons, known as the . inequalities (or KKS inequalities), characterize the set of .-vectors of simplicial complexes. We remark that characterizing .-vectors of boolean complexes is much, much simpler. See Problem 8.7 (Fig. 10.1).