Best Approximation and Coincidence Theorems for Composites of Acyclic Mappings
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摘要: 对定义在可缩空间上的零调值复合映象证明了某些新的重合点定理.作为应用某些最佳逼近定理和集值映象的重合点定理被给出.这些定理改进和推广了最近文献中许多已知结果.Abstract: Some new coincidence theorems involving a new class of set-valued mappings containing composites of acyclic mappings defined on a contractible space are proved.As applications,some best approximation theorems and coincidence theorems for set-valued mappings are also given.A number of known results in recent literature are improved and generalized by the thorems in this paper.
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