Báo cáo toán học: "The Quantum Double of a Dual Andruskiewitsch-Schneider Algebra Is a Tame Algebra" pdf

Báo cáo toán học: "The Quantum Double of a Dual Andruskiewitsch-Schneider Algebra Is a Tame Algebra" pdf

Báo cáo toán học: "The Quantum Double of a Dual Andruskiewitsch-Schneider Algebra Is a Tame Algebra" pdf

... Hopf algebras in the graded case. In order to study tame basic Hopf algebras or generally tame Hopf algebras, we need more examples of tame Hopf algebras. The Andruskiewitsch-Schneider algebra is ... modules for the quantum double of a special Taft algebra in [3]. From this, we can deduce immediately that the quantum double of this special Taft algebra is ta...
Ngày tải lên : 06/08/2014, 05:20
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Báo cáo toán học: "The maximum number of perfect matchings in graphs with a given degree sequence" docx

Báo cáo toán học: "The maximum number of perfect matchings in graphs with a given degree sequence" docx

... rows and columns of the adjacency matrix of G it is a block diagonal matrix in which every block is an all-1 square matrix, and as our graph G has no loops, this means that it is a union of complete ... a square all-1 matrix. Proof of Theorem 1.1: The square of the number of perfect matchings of G counts ordered pairs of such matchings. We claim that this is the...
Ngày tải lên : 07/08/2014, 15:22
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Báo cáo toán học: " The Translational Hull of a Strongly Right or Left Adequate Semigroup" pdf

Báo cáo toán học: " The Translational Hull of a Strongly Right or Left Adequate Semigroup" pdf

... itself a right translation of S if (ab)ρ = a( bρ) for all a, b ∈ S. A left translation λ and a right translation ρ of S are said to be linked if a( λb)= (a )b for all a, b ∈ S. In this case, we call ... translational hull of a type -A semigroup is still of the same type [6], it is natural to ask whether the translational hull of C-Ehresmann semigroups and their gene...
Ngày tải lên : 06/08/2014, 05:20
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Báo cáo toán học: "The independence number of graphs with large odd girth" ppt

Báo cáo toán học: "The independence number of graphs with large odd girth" ppt

... Szemer´edi made a breakthrough in this area when they provided a polynomial algorithm to find an independent set of size at least α(G) ≥ n log d 100d . * Correspondence to Tristan Denley, Matematiska institutionen, ... are designed to deal with the case when the average degree of the graph is large. We shall prove that an r-regular graph without 3 and 5 cycles has an independence num...
Ngày tải lên : 07/08/2014, 06:20
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Báo cáo toán học: "THE INDEPENDENCE NUMBER OF DENSE GRAPHS WITH LARGE ODD GIRTH" ppsx

Báo cáo toán học: "THE INDEPENDENCE NUMBER OF DENSE GRAPHS WITH LARGE ODD GIRTH" ppsx

... ≥ √ n ¯ d2 as claimed. This improves Denley’s Theorems 1 and 2. It is sharp for the regular complete bipartite graphs K aa . The above results are readily extended to graphs of larger odd girth. Lemma ... to n.LetA (respectively B) be the set of vertices v of G such that the minimum label on vertices at distance k or less from v is at even (respectively odd) distance k − 1orless. It...
Ngày tải lên : 07/08/2014, 06:20
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Báo cáo toán học: "The asymptotic number of set partitions with unequal block sizes" pot

Báo cáo toán học: "The asymptotic number of set partitions with unequal block sizes" pot

... partitions with unequal block sizes A. Knopfmacher Department of Computational and Applied Mathematics University of Witwatersrand Johannesburg, South Africa e-mail: arnoldk@gauss.cam.wits.ac.za A. ... Stark 2 Department of Mathematics and Statistics University of Melbourne Parkville, Victoria 3052, Australia e-mail: dstark@maths.mu.oz.au G. Szekeres Department of Mathematics Univ...
Ngày tải lên : 07/08/2014, 06:20
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