Hostname: page-component-848d4c4894-pftt2 Total loading time: 0 Render date: 2024-05-01T14:23:42.840Z Has data issue: false hasContentIssue false

Maximal immediate extensions are not necessarily maximally complete

Published online by Cambridge University Press:  09 April 2009

Hans Heinrich Brungs
Affiliation:
University of Alberta Edmonton, AlbertaCanadaT6G 2G1
Günter Törner
Affiliation:
Fachbereich Mathematik Universität DuisburgD 4100 Duisburg, Federal Republic of Germany
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

An extension R1 of a right chain ring R is called immediate if R1 has the same residue division ring and the same lattice of principal right ideals as R. Properties of such immediate extensions are studied. It is proved that for every R, maximal immediate extensions exist, but that in contrast to the commutative case maximal right chain rings are not necessarily linearly compact.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1990

References

[1]Bessenrodt, C., Brungs, H. H. and Törner, G., ‘Prime ideals in right chain rings,’ Mitt. Math. Sem. Giessen 163 (1984), 141167.Google Scholar
[2]Bessenrodt, C., Brungs, H. H. and Törner, G., ‘Right chain rings.’ Part 1, FB Mathematik, Preprint No. 74, Universität Duisburg, 1985.Google Scholar
[3]Brandal, W., ‘Almost maximal integral domains and finitely generated modules,’ Trans. Amer. Math. Soc. 183 (1973), 203222.CrossRefGoogle Scholar
[4]Dubrovin, N. I., ‘An example of a nearly simple chain ring with nilpotent elements,’ (Russian) Mat. Sb. (N.S.) 120 (1983), 441447.Google Scholar
[5]Kaplansky, I., ‘Maximal fields with valuations,’ Duke Math. J. 9 (1942), 303321.Google Scholar
[6]Kaplansky, I., ‘Modules over Dedekind rings and valuation rings,’ Trans. Amer. Math. Soc. 72 (1952), 327340.Google Scholar
[7]Krull, W., ‘Allgemeine Bewertungstheorie,’ J. Reine Angew. Math. 167 (1932), 160196.CrossRefGoogle Scholar
[8]Mathiak, K., Valuations of skew fields and projective Hjelmslev spaces, (Lecture Notes in Mathematics 1175, Springer, Berlin, 1986).CrossRefGoogle Scholar
[9]Rayner, F. J., ‘Gravett's proof of a theorem of Krull’, Quart. J. Math. 24 (1973), 409410.CrossRefGoogle Scholar
[10]Schilling, O., The theory of valuation, (Math. Surveys, Amer. Math. Soc., Providence, R. I., 1950).CrossRefGoogle Scholar