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Title: Localic Katětov-Tong insertion theorem and localic Tietze extension theorem (English)
Author: Li, Yong Min
Author: Guo-jun, Wang
Language: English
Journal: Commentationes Mathematicae Universitatis Carolinae
ISSN: 0010-2628 (print)
ISSN: 1213-7243 (online)
Volume: 38
Issue: 4
Year: 1997
Pages: 801-814
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Category: math
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Summary: In this paper, localic upper, respectively lower continuous chains over a locale are defined. A localic Katětov-Tong insertion theorem is given and proved in terms of a localic upper and lower continuous chain. Finally, the localic Urysohn lemma and the localic Tietze extension theorem are shown as applications of the localic insertion theorem. (English)
Keyword: frame
Keyword: locale
Keyword: lower (upper) continuous chain
Keyword: normal locale
MSC: 06D20
MSC: 06D22
MSC: 18B30
MSC: 54C20
MSC: 54C30
idZBL: Zbl 0938.06008
idMR: MR1603726
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Date available: 2009-01-08T18:38:12Z
Last updated: 2012-04-30
Stable URL: http://hdl.handle.net/10338.dmlcz/118974
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