A Note: An Invariance Theorem for Mappings II

被引:3
|
作者
Sacker, Robert J. [1 ]
机构
[1] Univ So Calif, Dept Math, Los Angeles, CA 90089 USA
关键词
Invariance; Mappings; Difference equation; Discrete dynamics;
D O I
10.1007/s10884-012-9273-2
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Conditions on a domain D in are given so that if f is a continuous mapping of into , is an open mapping on the interior of D and maps the boundary of D into the closure of D then f maps the entire set into its closure, i.e. is invariant. This is an improvement over a previous result where f was required to be injective (one-to-one) since a locally injective map on the interior of D is an open map.
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页码:595 / 599
页数:5
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