A fractional [a, b]-factor of a graph G is function h from E(G) to [0, 1] satisfying \(a \le d_G^h(v) b\) for every vertex v G, where \(d_G^h(v) = \sum\limits_{e \in E(v)} {h(e)} \) and E(v) {e uv : u ? V (G)}. called b]-covered if contains with h(e) 1 any edge e G. (a, b, k)-critical covered — Q ? V(G) ?Q? k. In this article, we demonstrate neighborhood condition be covered. Furthermore, claim...

Let V be a Hilbert space, a(·, ·) : V × V → lR a bounded, V-elliptic bilinear form and : V → lR a bounded linear functional. We want to approximate the variational equation: Find u ∈ V such that (3.1) a(u, v) = (v) , v ∈ V. We recall that the Lax-Milgram Lemma ensures the existence and uniqueness of a solution of (3.1). Now, given a finite-dimensional subspace V h ⊂ V , dim V h = n h , the Ritz...

A graph G admits an H-covering if every edge of belongs to a subgraph isomorphic given H. is said be H-magic there exists bijection f:V(G)∪E(G)→{1,2,…,|V(G)|+|E(G)|} such that wf(H′)=∑v∈V(H′)f(v)+∑e∈E(H′)f(e) constant, for H′ In particular, H-supermagic f(V(G))={1,2,…,|V(G)|}. When H complete K2, H-(super)magic labeling edge-(super)magic labeling. Suppose F-covering and two graphs F We define (...

mathematical chemistry is a branch of theoretical chemistry for discussion and prediction of the molecular structure using mathematical methods without necessarily referring to quantum mechanics. in theoretical chemistry, distance-based molecular structure descriptors are used for modeling physical, pharmacologic, biological and other properties of chemical compounds. the wiener polarity index ...

requirements of submaximal exercise effect on the hyperpnea needed to meet the gas exchange Lesions in the cerebellar fastigial nucleus have a small You might find this additional info useful... physiology, especially those papers emphasizing adaptive and integrative mechanisms. It is published 12 times a publishes original papers that deal with diverse area of research in applied

background and objectives: human t-cell lymphotropic viruses (htlv) type 1 and 2 are retroviruses that share the same routes of transmission as human immunodeficiency virus (hiv). as a consequence of epidemiologic similarities, hiv and htlv-1/2 co-infection is frequent. due to the limited data, this study assessed the seroprevalence of htlv-1/2 infections in hiv infected patients in tehran, ira...