On Hausdorff compactifications of non-locally compact spaces

Let X be a completely regular, Hausdorff space and let R be the set of points in X which do not possess compact neighborhoods. Assume R is compact. If X has a compactification with a countable remainder, then so does the quotient X/R, and a countable compactificatlon of X/R implies one for X−R. A ch...

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Main Authors: James Hatzenbuhler, Don A. Mattson
Format: Article
Language:English
Published: Wiley 1979-01-01
Series:International Journal of Mathematics and Mathematical Sciences
Subjects:
Online Access:http://dx.doi.org/10.1155/S0161171279000375
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author James Hatzenbuhler
Don A. Mattson
author_facet James Hatzenbuhler
Don A. Mattson
author_sort James Hatzenbuhler
collection DOAJ
description Let X be a completely regular, Hausdorff space and let R be the set of points in X which do not possess compact neighborhoods. Assume R is compact. If X has a compactification with a countable remainder, then so does the quotient X/R, and a countable compactificatlon of X/R implies one for X−R. A characterization of when X/R has a compactification with a countable remainder is obtained. Examples show that the above implications cannot be reversed.
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spelling doaj-art-2062212a175f4fe187e80f1523fae7c62025-02-03T01:13:13ZengWileyInternational Journal of Mathematics and Mathematical Sciences0161-17121687-04251979-01-012348148610.1155/S0161171279000375On Hausdorff compactifications of non-locally compact spacesJames Hatzenbuhler0Don A. Mattson1Department of Mathematics, Moorhead State University, Moorhead 56560, Minnesota, USADepartment of Mathematics, Moorhead State University, Moorhead 56560, Minnesota, USALet X be a completely regular, Hausdorff space and let R be the set of points in X which do not possess compact neighborhoods. Assume R is compact. If X has a compactification with a countable remainder, then so does the quotient X/R, and a countable compactificatlon of X/R implies one for X−R. A characterization of when X/R has a compactification with a countable remainder is obtained. Examples show that the above implications cannot be reversed.http://dx.doi.org/10.1155/S0161171279000375countable remainderscompactifications non-locally compact spacescomponents of βX - X.
spellingShingle James Hatzenbuhler
Don A. Mattson
On Hausdorff compactifications of non-locally compact spaces
International Journal of Mathematics and Mathematical Sciences
countable remainders
compactifications non-locally compact spaces
components of βX - X.
title On Hausdorff compactifications of non-locally compact spaces
title_full On Hausdorff compactifications of non-locally compact spaces
title_fullStr On Hausdorff compactifications of non-locally compact spaces
title_full_unstemmed On Hausdorff compactifications of non-locally compact spaces
title_short On Hausdorff compactifications of non-locally compact spaces
title_sort on hausdorff compactifications of non locally compact spaces
topic countable remainders
compactifications non-locally compact spaces
components of βX - X.
url http://dx.doi.org/10.1155/S0161171279000375
work_keys_str_mv AT jameshatzenbuhler onhausdorffcompactificationsofnonlocallycompactspaces
AT donamattson onhausdorffcompactificationsofnonlocallycompactspaces