𝔖 Bobbio Scriptorium
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On B2k-Sequences

✍ Scribed by X.D. Jia


Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
287 KB
Volume
48
Category
Article
ISSN
0022-314X

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We introduce a new counting method to deal with B 2 [2] sequences, getting a new upper bound for the size of these sequences, F(N, 2) -6N+1.

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We show that the maximum size of a B 2 -sequence of binary n-vectors for large enough n is at most 2 0.5753n , thus improving on the previous bound 2 0.6n due to B. Lindstro m.

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A graph G is called k-degenerate if every subgraph of G has a vertex of degree at most k. A k-degenerate graph G is maximal k-degenerate if for every edge e E QG), G + e is not k-degenerate. Necessary and sufficient conditions for the sequence II = (d,, d2,. . . , d,) to be a degree sequence of a ma

Molecular Systematics of Selene (Percifo
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Published molecular phylogenetic studies of elapid snakes agree that the marine and Australo-Melanesian forms are collectively monophyletic. Recent studies, however, disagree on the relationships of the African, American, and Asian forms. To resolve the relationships of the African, American, and As