本文在一般有界区域上研究了一类多参数Semipositone问题.结合上下解方法与下降流不变集临界点理论,证明了此类问题有四个解,其中至少有两个是正的.
In this article,we consider a class of multiparameter semipostione problems in a general bounded smooth domain of R^N.By combining the methods of sub-super solutions and the critical point theory of invariant sets of descending flow,we prove the existence of at least two positive solutions for the problems.