Báo cáo toán học: "On M-spectral sets and rationally invariant subspaces " pptx

... analysis of the capacity of N∗Nakagami-m channels. Specifically, we have studied the influence of the severity of fading and the number of hops on the PDF, CDF, LCR, and ADF of the channel capacity. ... the expressions for the statistical properties of the channel capacity C(t). Again, by applying the concept of transformation of random variables...

Ngày tải lên: 20/06/2014, 20:20

Ngày tải lên: 05/08/2014, 15:20

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Ngày tải lên: 05/08/2014, 15:20

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Ngày tải lên: 05/08/2014, 15:21

... Yao, Reid’s conjecture on score sets in tournaments, Kexue Tongbao 33 (1988) 481–484 (in Chinese). 7. T. X. Yao, On Reid’s conjecture of score sets for tournaments, Chinese Sci. Bull. 34 (1989) ... of Reid’s conjecture by pure arithmetical analysis which appeared in Chinese [6] in 1988 and in English [7] in 1989. In the following result, we prove that any set of p non...

Ngày tải lên: 06/08/2014, 05:20

... f u and the first term of f v , by x t the g.c.d. of the first term of f u and the second term of f v , by x r the g.c.d. of the second term of f u and the second term of f v , and by x s the g.c.d. ... decomposition of the presentation ideal of the Symmetric algebra Sym(I) in Theorem 3.1. All these results are independent of the characteristi...

Ngày tải lên: 06/08/2014, 05:20

... necessary conditions of Hopfian and Co -Hopfian modules. In particular, we show that the weakly Co -Hopfian regular module R R is Hopfian, and the left R-module M is Co -Hopfian if and only if the left R[x]/(x n+1 )- module M[x]/(x n+1 ) ... R[x]/(x n+1 )- module M[x]/(x n+1 ) is Co -Hopfian, where n is a positive integer. 2000 Mathematics Subject Classification: Keywords: Hopfian modul...

Ngày tải lên: 06/08/2014, 05:20

... distance is not equal to afixed δ∈{ 1 , ,n} , then a pair of disconnected sets becomes an equidistant code pair . For disconnected sets A and B we will give a bound for |A|·|B| in terms of the eigenvalues ... ,q } n ,thesetofwordsoflengthnoveranalphabetofsize q,anddefinetwowordstobeinrelationR δ iftheirHammingdistance(the numberofcoordinateplacesinwhichtheydiffer)equalsδ.Thisdefines...

Ngày tải lên: 07/08/2014, 06:20

... B = X = A j . On the structure and classification of SOMAs: generalizations of mutually orthogonal Latin squares Leonard H. Soicher School of Mathematical Sciences Queen Mary and Westfield College Mile ... first study the structure of SOMAs, concentrating on how SO- MAs can decompose. We then report on the use of computational group theory and graph theory in...

Ngày tải lên: 07/08/2014, 06:20

... standard(C) and the set of standard marked Catalan trees by standard(C, ∗). The standard trees in C 4 are , , , , . One of the standard trees in CH 3 is . The standard tree representing the class [T ... those trees which are largest in their equivalence class as standard trees, and use them as equivalence class representatives. We will de- note the set of standard...

Ngày tải lên: 07/08/2014, 06:22

... coloured differently. The upper and lower chromatic numbers ¯χ, χ are the maximum and minimum numbers of colours for which there exists a colouring using all the colours. The concepts of mixed hypergraph, upper and ... =3or χ =2. the electronic journal of combinatorics 8 (2001), #R6 7 On the upper and lower chromatic numbers of BSQSs(16) ∗ Giova...

Ngày tải lên: 07/08/2014, 06:22

... no triangles and |Z| k1 Ã|Y \Q|.Then k1 Ã|Y \Q||Z|à(Y )= k Ã|Y |. the electronic journal of combinatorics 9 (2002), #R22 18 Triangle Free Sets and Arithmetic Progressions – Two Pisier Typ e ... three triangles and since |Y | = 6, there can be no point of degree 3. Any two points of S lie in at least two distinct triangles, and thus Y contains exactly 3 triangles...

Ngày tải lên: 07/08/2014, 06:23

... with fixed letter frequencies We now consider the letter statistics of ternary square-free words. Denote the number of occurrences of the letter a in a ternary square-free word w n of finite length ... =1isalocalmaximumofP (). Due to the concavity of P (), it is the global maximum. the electronic journal of combinatorics 11 (2004), #R14 15 On the En...

Ngày tải lên: 07/08/2014, 08:20

... and of mixed hypergraphs with maximum degree two [11, 12] are gap-free. Feasible sets of mixed hypergraphs with maximum degree three need not to be gap-free. The feasible sets of planar mixed ... that feasible sets of mixed hypertrees [10], mixed the electronic journal of combinat orics 11 (2004), #R19 2 5 Conclusion There exists a mixed hypergraph whose fe...

Ngày tải lên: 07/08/2014, 08:20

... objects of O. The root of the tree is the object of O having the minimum size (possibly the empty object). The objects having the same value of the parameter p lie at the same level, and the sons of ... : the uppermost cell of the rightmost column of the polyomino has the maximal ordinate among all the cells of the polyomino; U2 : the lowest...

Ngày tải lên: 07/08/2014, 08:20