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关于度量空间集值映照列的不动点定理
On Fixed Point Theorem of Set valued Mapping Sequence in a Metric Space
【摘要】 本文建立了满足条件h(F_nx,F_ny)≤?(d(x,F_nx),d(y,F_ny),d(x,))(n—1,2,……)(1)的连续集值映照列F_n:x→P_fb(x)的不动点定理,它类似于文献[1]中所叙述的压缩型集值映照列的不动点定理、我们还得到一个形如(1)的单值映照族的公共不动点定理.
【Abstract】 In this paper,we have established the fixed point theorem for a continuous set valued mapping sequence Fn:X→Pfb(X)(n=1.2……),which satisfies the following condition:h(Fnx,Fng≤φ(d(x,Fnx),d(y,Fny),d(x,g))(n=1,2,…)It is found that this theorem is similar to the fixed point theorem for the contraction type set valued mapping sequence as shown in Ref.1.Finally,we have also obtained a common fixed point theorem for the mapping family,which has the same form as Eq.(1).
- 【文献出处】 湖南大学学报 , 编辑部邮箱 ,1985年01期
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