Báo cáo toán học: "Are commuting systems of decomposable operators decomposable? " doc

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Ngày tải lên: 05/08/2014, 09:46

Ngày tải lên: 05/08/2014, 10:20

... class="bi x0 y0 w2 h 3" alt =""

Ngày tải lên: 05/08/2014, 15:20

Ngày tải lên: 05/08/2014, 15:20

... class="bi x0 y0 w1 h 1" alt =""

Ngày tải lên: 05/08/2014, 15:20

Ngày tải lên: 05/08/2014, 15:20

Ngày tải lên: 05/08/2014, 15:21

Ngày tải lên: 05/08/2014, 15:21

... generalized solutions of the first initial b oundary value problem for strongly Schrăodinger systems in domains with conical p oints on boundary are given. 1. Introduction Boundary value problems for Schrăodinger ... (2.14) Vietnam Journal of Mathematics 33:2 ( 2005) 135–147 On the Smoothness of Solutions of the First Initial Boundary Value...

Ngày tải lên: 06/08/2014, 05:20

... ξ 4 v 33 v 15 v 24 , (6.7) On the Hyperbolicity of some Systems of Nonlinear 111 The solvability of the Cauchy problem for the equations (1.5) strongly depends on the hyperbolicity of the system (1.1). So, ... hyperbolic. 3. Proof of the Theorem 2.8 for the Case n =2 Suppose that A T = A, i.e. a 12 = a 21 . We prove that the system (1.1) is hyper- boli...

Ngày tải lên: 06/08/2014, 05:20

... journal of combinatorics 10 (2003), #R39 6 2.1 An Invariant of Szemer´edi’s Regularity Lemma Let G =(U ∪ V, E) be a bipartite graph. For an integer t, we define a t-equitable partition V (G) as a ... state, up front, that we always assume m is a sufficiently large integer. Our proof of Theorem 1.5 uses a well-known invariant formulation of Szemer´edi’s Regularity Lemma....

Ngày tải lên: 07/08/2014, 08:20

... present a bijective proof of Borchardt’s identity, one which relies only on rearranging terms in a sum by means of sign-reversing involutions. The proof reveals interesting properties of pairs of permutations. ... sign-reversing involution of C(p, q). Theorem 3.8 implies that equation (2.3) is true, hence we have a bijective proof of Borchardt’s identity. the electro...

Ngày tải lên: 07/08/2014, 08:20

... of the vertices of G into r parts which maximizes the number of crossing edges between the parts. Then for every x ∈ V i and j = i the number of neighbors of x in V i is at most the number of ... possible value of ρ = ρ(K r+1 (t)) may well be slightly better than the one we obtain. The problem of determining the behavior of the best possible value of ρ, as well as that o...

Ngày tải lên: 07/08/2014, 13:21

... of evaluation formulas for the permanent of copies of matrices A . One in terms of certain orientations of A , the other in terms of colorings of A . First, in section 1.1 , orientations of matrices ... edge-vertex matrix of G . 2.1 Orientations and Eulerian subgraphs From definitions 1.4 and 2.1 follows: Proposition 2.2. The orientations ϕ of G are exactly...

Ngày tải lên: 07/08/2014, 13:21

... (−1) m q (3m 2 +m)/2 c 2 , the electronic journal of combinatorics 17 (2010), #R116 2 Two Simple Proofs of Winquist’s Identity Chutchai Nupet Department of Mathematics Faculty of Science, Pr ince of Songkla University Hatyai, ... Classifi cation: 11F20, 11F27 Abstract We give two new proofs of Winquist’s identity. In the first pro of, we u se basic properties of cu...

Ngày tải lên: 08/08/2014, 12:22