locally finite maps

locally finite maps
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DOI:
10.1090/s0002-9939-1977-0442878-9
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发表时间:
1977
期刊:
--
影响因子:
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通讯作者:
E. Michael
E. Michael
中科院分区:
其他
文献类型:
--
作者:
E. Michael

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一个映射f:X -* Y称为a-局部有限的,如果X的每个a-局部有限覆盖Lt都有一个加细S使得f(s)是a-局部有限的.本文的主要目的是证明作者在以前的一个注记中所宣布的关于这些映射的一些结果。
A map f: X -* Y is called a-locally finite if every a-locally finite cover Lt of X has a refinement S such that f(s) is a-locally finite. The principal purpose of this paper is to provide proofs of some results on these maps which were announced by the author in a previous note.