| 关于完备度量空间上4个自映射的公共不动点 |
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| 引用本文： | 柯嘉.关于完备度量空间上4个自映射的公共不动点[J].杭州师范学院学报(自然科学版),1998(6). |
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| 作者姓名： | 柯嘉 |
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| 作者单位： | 杭州教育学院数学系 |
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| 摘 要： | 本文通过引进完备度量空间Ｘ上两个自映射的拟弱交换的概念，把Ｓ．Ｓｅｓｓａ和Ｂ．Ｆｉｓｈｅｒ在［１］中得到的主要定理３推广到拟弱交换的自映射的情形，它以［１］的定理３作为其特款，同时我们给出适当的例子以说明所作推广的意义．
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| 关 键 词： | 弱交换，拟弱交换，完备度量空间，上半连续，柯西序列 |
COMMON FIXED POINTS OF FOUR MAPPINGS IN A COMPLETE METRIC SPACE |
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| Ke Jia.COMMON FIXED POINTS OF FOUR MAPPINGS IN A COMPLETE METRIC SPACE[J].Journal of Hangzhou Teachers College(Natural Science),1998(6). |
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| Authors: | Ke Jia |
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| Abstract: | By introducing the concept of quasi weak commutativity of two selfmappings in a complete metric space,we establish a common fixed point theorem for four selfmappings of a complete metric space.This result generalizes the main theorem 3 in and suitable examples are given. |
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| Keywords: | weak commutativity quasi weak commutativity complete metric space upper semi continuous Cauchy sequence |
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