非线性项变号的非局部边值问题正解的存在性

Existence of Positive Solutions for a Nonlocal Boundary Value Problem with Sign Changing Nonlinearities

研究了非线性项变号的非局部边值问题正解的存在性,应用Nowhere normal-outward紧映射的不动点指数理论,在f(t,0)≥0且满足次线性条件下,得到边值问题正解的存在性结论.

The nonlocal boundary value problems with nonlinearities changing signs are studied,the existence of positive solutions is obtained by using the Nowhere normal-outward compact map＇s fixed point index theorem under f（ t,0） ≥0 and sub-linear conditions.