奇异半正微分系统边值问题正解的存在性

摘要

By using the fixed point theorem,multiple positive solutions for second-order two-point singular semi-positone differential systems with boundary value problems are investingaled. The nonlinearf1) (t,u,v) ,f2(t,u,v) may be singular att -0,t = 1 ,u =0,and v =0,also may be negative for some values of t,u,v.%利用不动点定理,考虑了二阶两点奇异半正微分系统边值问题的多个正解的存在性.该微分系统的非线性项f1(t,u,v),f2(t,u,v)可能在t=0,t=l,u=0,v=0奇异并且可能在某些t,u,v处为负.