In this paper,we prove that a complete n-dimensional Riemannian manifold with nonnegative kth-Ricci curvature, large volume growth has finite topological type p
In the present paper, we consider the existence of positive periodic solutions for a kind of delay Logistic equations. By using a fixed point theorem in cones,w
It is one of the most interesting problems in number theory to compute some especial series by using Zeta and Gamma functions, and results have been obtained fo
By using the homogeneous balance principle(HBP), we derive a B(a)cklund transformation(BT) to the generalized dispersive long wave equation with variable coeffi
This paper is concerned with the oscillation of nonlinear partial difference equations with continuous variables and the corresponding dual equations. Several s
Let R be a prime ring of characteristic different from 2, d and g two derivations of R at least one of which is nonzero, L a non-central Lie ideal of R, and a