EUDML

Currently displaying 1 – 9 of 9

Order by Relevance | Title | Year of publication

Categorical Convolutional Formulas.

Kung-Wei Yang — 1983

Monatshefte für Mathematik

On the existence of distinguished bases in a $V$ -space

Kung-Wei Yang — 1971

Compositio Mathematica

The Dynamics of an Interactional Model of Rabies Transmitted between Human and Dogs

Wei Yang; Jie Lou — 2009

Bollettino dell'Unione Matematica Italiana

Assuming that the population of dogs is constant and the population of human satisfies the Logistical model, an interactional model of rabies transmitted between human and dogs is formulated. Two thresholds $R_{0}$ and $R_{1}$ which determine the outcome of the disease are identified. Utilizing the method of Lyapunov function and the property of the cooperative systems, we get the global asymptotic stability for both the disease-free equilibrium and the endemic equilibrium. A critical vaccination rate is obtained,...

Nonmetrizable topological dynamical characterization of central sets

Hong-Ting Shi; Hong-Wei Yang — 1996

Fundamenta Mathematicae

Without the restriction of metrizability, topological dynamical systems $(X, ⟨ T_{s} ⟩_{s \in G})$ are defined and uniform recurrence and proximality are studied. Some well known results are generalized and some new results are obtained. In particular, a topological dynamical characterization of central sets in an arbitrary semigroup (G,+) is given and shown to be equivalent to the usual algebraic characterization.

On totally umbilical submanifolds of Finsler spaces

Qun He; Wei Yang; Wei Zhao — 2011

Annales Polonici Mathematici

The notion of a totally umbilical submanifold of a Finsler manifold is introduced. Some Gauss equations are given and some results on totally umbilical submanifolds of Riemannian manifolds are generalized. Totally umbilical submanifolds of Randers spaces are studied; a rigidity theorem and an example are given.

Sign-changing solutions for discrete second-order three-point boundary value problems.

He, Tieshan; Yang, Wei; Yang, Fengjian — 2010

Discrete Dynamics in Nature and Society

A local convergence theorem for partial sums of stochastic adapted sequences

Wei Guo Yang; Zhong Xing Ye; Liu, Wen — 2006

Czechoslovak Mathematical Journal

In this paper we establish a new local convergence theorem for partial sums of arbitrary stochastic adapted sequences. As corollaries, we generalize some recently obtained results and prove a limit theorem for the entropy density of an arbitrary information source, which is an extension of case of nonhomogeneous Markov chains.