Title:
|
A categorical account of the localic closed subgroup theorem (English) |
Author:
|
Townsend, Christopher |
Language:
|
English |
Journal:
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Commentationes Mathematicae Universitatis Carolinae |
ISSN:
|
0010-2628 (print) |
ISSN:
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1213-7243 (online) |
Volume:
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48 |
Issue:
|
3 |
Year:
|
2007 |
Pages:
|
541-553 |
. |
Category:
|
math |
. |
Summary:
|
Given an axiomatic account of the category of locales the closed subgroup theorem is proved. The theorem is seen as a consequence of a categorical account of the Hofmann-Mislove theorem. The categorical account has an order dual providing a new result for locale theory: every compact subgroup is necessarily fitted. (English) |
Keyword:
|
locale |
Keyword:
|
power locale |
Keyword:
|
Hofmann-Mislove theorem |
Keyword:
|
closed subgroup |
Keyword:
|
compact locale |
Keyword:
|
fitted sublocale |
Keyword:
|
categorical logic |
MSC:
|
06D22 |
MSC:
|
06D50 |
MSC:
|
18B30 |
MSC:
|
18B40 |
MSC:
|
54B20 |
MSC:
|
54B30 |
idZBL:
|
Zbl 1199.06039 |
idMR:
|
MR2374933 |
. |
Date available:
|
2009-05-05T17:04:36Z |
Last updated:
|
2012-05-01 |
Stable URL:
|
http://hdl.handle.net/10338.dmlcz/119678 |
. |
Reference:
|
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Reference:
|
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Reference:
|
[JV91] Johnstone P.T., Vickers S.J.: Preframe presentations present.in: Carboni, Pedicchio and Rosolini (Eds.), Category Theory (Como, 1990); Springer Lecture Notes in Mathematics 1488, Springer, Berlin, 1991, pp.193-212. Zbl 0764.18004, MR 1173013 |
Reference:
|
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Reference:
|
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Reference:
|
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Reference:
|
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Reference:
|
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Reference:
|
[T04] Townsend C.F.: An axiomatic account of weak localic triquotient assignments.J. Pure Appl. Algebra, to appear. |
Reference:
|
[T05] Townsend C.F.: A categorical account of the Hofmann-Mislove theorem.Math. Proc. Cambridge Philos. Soc. 139 (2005), 441-456. Zbl 1104.06008, MR 2177170 |
Reference:
|
[V89] Vickers S.J.: Topology via Logic.Cambridge Tracts in Theoretical Computer Science 5, Cambridge University Press, Cambridge, 1989. Zbl 0922.54002, MR 1002193 |
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