Báo cáo toán học: "The number of 0-1-2 increasing trees as two different evaluations of the Tutte polynomial of a complete graph" potx

... D. H. Thang, On Ito stochastic integral with respect to vector stable random measures, Acta Math. Vietnam. 21 (1996) 171–181. 12. D. H. Thang, Vector random stable measures and random integrals, ... for defining the Y -valued Ito process and establishing the Ito formula, in Secs. 3 and 4 we construct the Ito integral of L(X, Y )-valued adapted random func-...

Ngày tải lên: 06/08/2014, 05:20

... a graph G and a covering ˜ G of G and we study the relations of their eigenvalues and heat kernels. We evaluate the heat kernel for an infinite k-regular tree and we examine the heat kernels for ... Coverings, heat kernels and spanning trees Fan Chung †∗ University of Pennsylvania Philadelphia, Pennsylvania ... path P with vertices v 0 , ,v p where p = D(G). Suppose...

Ngày tải lên: 07/08/2014, 06:20

... the separability number and the Schurity number of W respectively. The separability number s(C) and the Schurity number t(C) of a scheme C are defined as the corresponding numbers of its Bose-Mesner ... m- equivalence of permutation groups (see [24]). In Section 4 we introduce the separability and Schurity numbers of cellular algebras and schemes and study gen...

Ngày tải lên: 07/08/2014, 06:20

... journal of combinatorics 10 (2003), #N12 3 Thus we may also think of linear k-trees as maximal linear k-forests or minimally k-connected hypergraphs. 3 All trees are not created equal A linear k-tree ... solvable minimum spanning tree problem. Replacing ‘k-hypertree’ with linear k-tree’ in the above definition drastically reduces the complexity of the problem. By Theorems 2.4 and 2.3...

Ngày tải lên: 07/08/2014, 07:21

... The number of 0-1-2 increasing trees as two different evaluations of the Tutte polynomial of a complete graph C. Merino ∗ Instituto de Matem´aticas, Universidad Nacional Aut´onoma de M´exico, Circuito ... present an algebraic proof of a result with the same flavour as the latter: T n+2 (1, −1) = T n (2, −1), where T n (1, −1) has the combinatorial i...

Ngày tải lên: 07/08/2014, 15:22

... set of q edges with weight at least s in a graph G. If the total weight of edges in Q is at most cq, then rep(L(G)) ≥ max k>s 2(k−c) (k−s)(k−s+1) q. Proof. Let X i be the number of edges of ... define the repetition number of a graph G, written rep(G), to be the maximum multiplicity in the list of vertex degrees. We study the minimum of rep(G) on various classes of n-ver...

Ngày tải lên: 07/08/2014, 21:21

... “intersection graph” of the components in G 1 and G 2 ). By construction, H is bipartite. The degree of a vertex in H is the number of vertices in the corresponding component of G 1 or G 2 . Each edge of H corresponds ... {a ∈ A: a /∈ B}. 2 Independence ratio at least 1/4 The independence number of a graph is the sum of the independence numbers of its components. Therefore...

Ngày tải lên: 07/08/2014, 21:21

... such a graph G with no independent set of size at least N d k d −0.5 . the electronic journal of combinatorics 16 (2009), #R71 5 Chromatic number for a generalization of Cartesian product graphs Daniel ... of graphs. A d-fold grid over G is a graph obtained from a d-dimensional rectangular grid of vertices by placing a graph from G on each of the lines paral...

Ngày tải lên: 07/08/2014, 21:21

... distinguishing number two. the electronic journal of combinatorics 17 (2010), #R20 6 Distinguishing Number of Countable Homogeneous Relational Structures C. Laflamme ∗ University of Calgary Department of ... skeleton of a structure A is the set of finite induced substructures of A and the age of A consists of all relational structures isomorphic to an element of...

Ngày tải lên: 08/08/2014, 11:20

... Chvatalova and J. Opatrn ´y. The bandwidth of theta graphs. Utilitas Math., 33:9–22, 1988. [12] Y. Egawa, H. Enomoto, S. Jendrol, K. Ota , and I. Schiermeyer. Independence number and vertex -disjoint ... T i for some i. Let u and v be the hub vertices of T and let Q 1 , Q 2 and Q 3 be the paths of T ea ch containing u and v. Suppose u and v are each incident to at least...

Ngày tải lên: 08/08/2014, 14:23

... CASE REPO R T Open Access Renal carcinoma infiltrating inferior vena cava and combined valvular heart disease - one-stage uro-cardiological procedure: a case report Artur A Antoniewicz 1 , ... separate operations. We report a case of 55-year-old man with combined valvular heart disease and renal carcinoma infiltrating inferior caval ve...

Ngày tải lên: 09/08/2014, 03:21

... kakarla.chalam@jax.ufl.edu Abstract Introduction: Spectral-domain optical coherence tomography findings in a patient with acute macular neuroretinopathy, and correlation with functional defects on microperimetry, ... upon acceptance. Fully formatted PDF and full text (HTML) versions will be made available soon. Infrared imaging and spectral-domain optica...

Ngày tải lên: 10/08/2014, 22:20

... contributions AG analyzed and interpreted data regarding our patient s endocrine disease and hypercalcemia. HA analyzed and interpreted data regarding her hematologic disease and performed her chemotherapy. ... 4:330 http://www.jmedicalcasereports.com/content/4/1/330 Page 4 of 4 CASE REPO R T Open Access Hypercalcemia and huge splenomegaly presenting in an elderly...

Ngày tải lên: 11/08/2014, 02:21

... presentation: We describe the case of a 31-year-old Asian man with an unusual case of hemoptysis and lung contusion and cavitation with exudative plural effusion due to pulmonary trauma following false ... CAS E REP O R T Open Access Lung contusion and cavitation with exudative plural effusion following extracorporeal shock wave lithotripsy...

Ngày tải lên: 11/08/2014, 07:20

... he was asymptomatic at rest. At 27 years of age, the patient reported an increase in dyspnea with minimal exertion. He was diagnosed with thrombosis of the Bla- lock-Taussig anastomosis and was ... failure, and sudden cardiac death. Truncus arteriosus is another rare anomaly, defined as a single great artery that originates from the base of the heart and gives rise to the pu...

Ngày tải lên: 11/08/2014, 23:21