弱内向型集压缩映射的正不动点和正特征元

本文建立了弱内向型集压缩映射的范数压缩与扩张型正不动点定理，并获得关于正特征元的一些结果．     

INFINITELY MANY SOLUTIONS FOR A SINGULAR ELLIPTIC EQUATION INVOLVING CRITICAL SOBOLEV-HARDY EXPONENTS IN RN

In this article, we study the existence of multiple solutions for the singular semilinear elliptic equation involving critical Sobolev-Hardy exponents -△u -μ u |x|2 = α|u|2*|x(s|s)*2u+ βa(x)|u|r-2u, x ∈RN.By means of the concentration-compactness principle and minimax methods, we obtain infinitely many solutions which tend to zero for suitable positive parameters α, β.     

一致凸Banach空间中渐近非扩张映射的迭代不动点定理

本文将Schu关于Hilbert空间中渐近非扩张映射的迭代不动点定理推广到一致凸Banach空间。