【摘要】 利用锥上的不动点定理,给出了非线性二阶三点边值问题解和正解的存在性定理.其中允许非线性项有一个负的下界.更多还原

【Abstract】 By using a fixed point theorem in cones,the existence of solutions and multiple solutions is considered for a nonlinear second-order three-point boundary value problem where nonlinear term is allowed to have a negative lower bound.更多还原