A note on the Auslander-Reiten conjecture

It is proved that the Auslander-Reiten conjecture is true for local Artin algebras with radical cube zero.     

A note on periodic solutions for semi-ratio-dependent predator-prey systems

This note investigates the existence of periodic solutions for semi-ratio-dependent predator-prey models with functional response. New sharp criteria without any other nontrivial assumptions are presented by the invariance property of homotopy and analysis technique, which improve and extend many previous work. Some interesting numerical examples are given to illustrate our results.     

Ap权反向Hoelder不等式的注记

本文指出[1]中关于Ap权反向Hoelder不等式的证明有误并给出一个正确的证明．     

关于 Markov 算子弱混和性质的一个注记

设P是L∞(X,∑,m)上的Markov算子,Q是任一具有有限不变测度并且遍历的 Markov 算子,在这篇注记中我们给出了P的混和性和 Cartesian 积P×Q的遍历性相互等价这一结果的直接而简单的证明.     

A note on the perturbed compound poisson risk model with a threshold dividend strategy

In this paper, we consider the Perturbed Compound Poisson Risk Model with a threshold dividend strategy （PCT）. Integro-differential equations （IDE） for its Cerber-Shiu functions and dividend payments function are stated. We maily focus on deriving the boundary conditions to solve these equations.     

变号扰动问题正解存在性的几点注记

本考虑了一类变号扰动的两点边值问题，得到了几个关于正解存在性的结论.     

关于布朗运动的一个注记

本对布朗运动的一个充要条件给出另一种证明．     

自由群的直积的检验元素的注记

本文研究了自由群的直积的检验元素,通过对直积的自同态的分解,得到了直积中的元素为检验元素的充分必要条件,改进了O'neill和Turner的结果.此外,构造了两类具体的检验元素.