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Compactness in Topological Hjelmslev Planes

Published online by Cambridge University Press:  20 November 2018

J. W. Lorimer
J. W. Lorimer*
Affiliation:
Department of Mathematics, University of Toronto Toronto, Ontario, M5S 1A1
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Abstract

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In the theory of ordinary topological affine and projective planes it is known that (1) An affine plane is never compact (2) a locally compact ordered projective plane is compact and archimedean (3) a locally compact connected projective plane is compact and (4) a locally compact projective plane over a coordinate ring with bi-associative multiplication is compact. In this paper we re-examine these results within the theory of topological Hjelmslev Planes and observe that while (1) remains valid (2), (3) and (4) are false. At first glance these negative results seem to suggest we are working in too general a setting. However a closer examination reveals that the absence of compactness in our setting is a natural and expected feature which in no way precludes the possibility of obtaining significant results.

Keywords

51H1051G0551C05
Type
Research Article
Information
Canadian Mathematical Bulletin , Volume 27 , Issue 4 , 01 December 1984 , pp. 423 - 429
Copyright
Copyright © Canadian Mathematical Society 1984

Footnotes

(1)

The author gratefully acknowledges the financial support of the National Sciences and Engineering Research Council of Canada.

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