M. Akbari Tootkaboni
Published 2013-02-13Version 1
Nonstandard analysis is very complex, so finding a simple description of infinitesimal points will be useful. In this paper, ultrafilters as infinitesimal points in a topological space will be proposed, and some topological concepts is restated by this tools.
Introducing a new concept of distance on a topological space by generalizing the definition of quasi-pseudo-metric
Nonstandard Analysis in Topology
On $κ$-bounded and $M$-compact reflections of topological spaces
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