Topology Atlas Document # ppae-21


Proper and admissible topologies in the setting of closure spaces

Mila Mrsevic

Proceedings of the Ninth Prague Topological Symposium (2001) pp. 205-216

A Cech closure space (X, u) is a set X with a (Cech) closure operator u which need not be idempotent. Many properties which hold in topological spaces hold in Cech closure spaces as well.

The notions of proper (splitting) and admissible (jointly continuous) topologies are introduced on the sets of continuous functions between Cech closure spaces. It is shown that some well-known results of Arens and Dugundji and of Iliadis and Papadopoulos are true in this setting.

We emphasize that Theorems 1-10 encompass the results of A. di Concilio and of Georgiou and Papadopoulos for the spaces of continuous-like functions as \theta-continuous, strongly and weakly \theta-continuous, weakly and super-continuous.

Mathematics Subject Classification. 54A05 54A10 54C05 54C10.
Keywords. Cech closure space, function space, proper (splitting) topology, admissible (jointly continuous) topology, $\theta$-closure, $\theta$-continuous function, strongly $\theta$-continuous, weakly $\theta$-continuous, weakly continuous, super-continuous function.

Document formats
AtlasImage (for online previewing)
LaTeX 40.3 Kb
DVI 57.6 Kb
PostScript 209.6 Kb
gzipped PostScript 80.2 Kb
PDF 208.8 Kb
Reference list in BibTeX

Comments. This article will be expanded and submitted for publication elsewhere.

Copyright © 2002 Charles University and Topology Atlas. Published April 2002.