POL
发表于 2025-3-21 17:03:50
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某人
发表于 2025-3-21 22:53:44
The combinatorics of algebraic graph theory in theoretical physics, analysis of algorithms used in actual computations shows why such a ‘trade-off’ is desirable. Series expansions for the limit of chromatic polynomials and for lattice models in statistical mechanics are considered as examples.
浓缩
发表于 2025-3-22 04:16:05
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CRP743
发表于 2025-3-22 07:24:09
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胆汁
发表于 2025-3-22 11:15:19
Soňa Nevšímalová MD, DSc,Oliviero Bruni MD Then t.≦s.≦p(A.) where p(A.) is the permanent (plus determinant) of the (n-2)×(n-2) matrix A.=(a.) defined by: . More specifically, let c. denote the number of simple graceful graphs on n vertices with i cycles (i=0,1,2,...,k, where k=[(n-2)/3]). Then we have
expire
发表于 2025-3-22 13:55:49
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expire
发表于 2025-3-22 19:04:27
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无法取消
发表于 2025-3-22 22:00:16
On the cayley index of a group,wn to date about Cayley indices of groups and where some of the results may be found. The general pattern thus far indicates that, with finitely many exceptions, c(G) is determined by whether G is (1) abelian, (2) generalized dicyclic, (3) solvable and finite but neither abelian nor generalized dicyclic, or (4) none of the above.
哺乳动物
发表于 2025-3-23 04:05:58
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Champion
发表于 2025-3-23 07:39:22
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