通过在赋格距离空间中定义一个半序,推广了著名的Caristi不动点定理.Caristi不动点定理是在完备的距离空间中给出了不动点的存在性,它在非线性泛函分析和许多领域中都有重要应用.
Caristi fixed pointtheorem is important in nonlinear functional analysis and many fields. we generalize famous Caristi fixed point theorem in the space with lattice distance.