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Nonstandard Methods for Upper Banach Density Problems

✍ Scribed by Renling Jin


Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
176 KB
Volume
91
Category
Article
ISSN
0022-314X

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✦ Synopsis


A general method is developed by using nonstandard analysis for formulating and proving a theorem about upper Banach density parallel to each theorem about Shnirel'man density or lower asymptotic density.


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A nonstandard density theorem for weak t
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## Abstract We prove a nonstandard density result. It asserts that if a particular formula is true for functions in a set __K__ of linear continuous functions between Banach spaces __E__ and __D__, then it remains valid for functions that are limits, in the uniform convergence topology on a given c