Báo cáo toán học: "On Lengths of Rainbow Cycles" pptx

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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, 15:20

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Ngày tải lên: 05/08/2014, 15:21

... On Convergence of Two-Parameter Multivalued Pramarts and Mils 39 7. F. Hiai and H. Umegaki, Integrables, conditional expectations and martingales of multivalued functions, ... North-Holland, Amsterdam, 1975. 16. M. Talagrand, Some structure results for martingales in limit and pramarts, The Ann. Prob. 13 (1975). 17. Z. Wang and X. Xue, On convergence and closednes...

Ngày tải lên: 06/08/2014, 05:20

... 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

... solution of one of the above systems, under some addi- tional conditions, is also a solution of some other systems of quasi-optimization problems, quasi-equilibrium problems, quasivariational problems ... some new results on the existence of solutions to systems concerning the following quasivariational inclusions. (UQVIP), Upper quasivariational inclusion problem...

Ngày tải lên: 06/08/2014, 05:20

... Convergence of Vector-Valued Weak Amarts and Pramarts 181 The main aim of the note is to extend the result to weak amarts and pramarts (cf. [5]) in P 1 (E). As a consequence, several versions of the ... On Convergence of Vector-Valued Weak Amarts and Pramarts 187 10. D. Q. Luu, On further classes of m artingale-like sequences and some decomposi- tion and...

Ngày tải lên: 06/08/2014, 05:20

... and Motivation The rank of a graph X is the rank of its adjacency matrix A( X). As the rank is such a fundamental algebraic concept, the relationship between the structure of a graph and its rank ... of other matrices associated with a graph, or about the ranks of certain graphs over finite fields (for examples, see Godsil & Royle [7]). In calculating the rank...

Ngày tải lên: 07/08/2014, 07:21

... of a cycle or a union of cycles of the permutation π : x → 2x of Z n (the map is a permutation since gcd(2,n) = 1). Only one cycle of D (and of π) has length 1, namely {0}.Foreachm-cycle C of ... family of all k-cycles by C k . For example, a 2-cycle consists of a pair of vertices and a pair of edges such that the pair of vertices is a subset of each edge. The above...

Ngày tải lên: 07/08/2014, 07:21

... show that the absence of a rainbow n-cycle (again, with n odd) implies the absence of rainbow cycles of lengths  n 2  and 3n − 6. However, the absence of a rainbow cycle of even length does not ... absence of rainbow n-cycles and rainbow m-cycles implies the absence of rainbow (n + m − 2)-cycles. (For example, by this fact alone, the absence of rainbow 3-cycl...

Ngày tải lên: 07/08/2014, 13:21

... each of which has a parallel class in one colour. The proof depends on the construction of a biembedding of a pair of Latin squares of side p, one of which has p 2 (p − 2)/8 subsquares of side ... biembeddings of Latin squares where paratopic copies are a llowed, and statements about particular realizations of Latin squares. For Latin squares A and A ′ with common...

Ngày tải lên: 08/08/2014, 01:20

... a l ). 4 Convexity lemma In this section we give a short polynomial proof of the convexity lemma, which is the crucial step in S´a-Thompson theorem [7, 10]. The original proofs of S´a and Thompson were ... elementary but very long and does not involve the concept of convexity. Later on shorter, combinatorial proof was given in [8]. Here we give the first purely polynomial pr...

Ngày tải lên: 08/08/2014, 12:22

... A not e on sum of powers of the Laplacian eigenvalues of bipartite graphs, Linear Algebra Appl. 430 (2009), 2503–2510. [12] B. Zhou, On sum of powers of the Laplacian eigenvalues of graphs, Linear ... On sum of powers of the Laplacian and signless Laplacian eigenvalues of graphs Saieed Akbari 1,2 Ebrahim Ghorbani 1,2 Jacobus H. Koolen 3,4...

Ngày tải lên: 08/08/2014, 12:22

... still keep hypothesis I for clarity of exposition in the proof. the electronic journal of combinatorics 18 (2011), #P96 7 On variants of Conway and Conolly’s Meta-Fibonacci recursions Abraham ... Conolly, Fibonacci and Meta-Fibonacci sequences. in: S. Vajda. ed., Fibonacci & Lucas Numbers and the Golden Section: Theory and Applications (1989), 127-139. [2] C. Deug...

Ngày tải lên: 08/08/2014, 14:23