Dual Numbers and Topological Hjelmslev Planes
Canadian mathematical bulletin, Tome 26 (1983) no. 3, pp. 297-302
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In 1929 J. Hjelmslev introduced a geometry over the dual numbers R+tR with t2 = Q. The dual numbers form a Hjelmslev ring, that is a local ring whose (unique) maximal ideal is equal to the set of 2 sided zero divisors and whose ideals are totally ordered by inclusion. This paper first shows that if we endow the dual numbers with the product topology of R2, then we obtain the only locally compact connected hausdorfT topological Hjelmslev ring of topological dimension two. From this fact we establish that Hjelmslev's original geometry, suitably topologized, is the only locally compact connected hausdorfr topological desarguesian projective Hjelmslev plane to topological dimension four.
Lorimer, J. W. Dual Numbers and Topological Hjelmslev Planes. Canadian mathematical bulletin, Tome 26 (1983) no. 3, pp. 297-302. doi: 10.4153/CMB-1983-048-6
@article{10_4153_CMB_1983_048_6,
author = {Lorimer, J. W.},
title = {Dual {Numbers} and {Topological} {Hjelmslev} {Planes}},
journal = {Canadian mathematical bulletin},
pages = {297--302},
year = {1983},
volume = {26},
number = {3},
doi = {10.4153/CMB-1983-048-6},
url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1983-048-6/}
}
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