Julian Dontchev
Published 1998-10-30, updated 1998-11-07Version 2
We answer a recent question of Pyrih by proving that a topological space $(X,\tau)$ is open-normal if and only if it is extremally disconnected.
Comments: 2 pages, to appear in "Questions and Answrs in General Topology"
Axiomatization of topological space in terms of the operation of boundary
Introducing a new concept of distance on a topological space by generalizing the definition of quasi-pseudo-metric
C-open Sets on Topological Spaces
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