Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/81736
Type: Artigo de periódico
Title: ON ZP-EXTENSIONS OF COMMUTATIVE RINGS
Author: FERRERO, M
PAQUES, A
SOLECKI, A
Abstract: We study Z(p)-extensions of a commutative ring R. Some general properties corresponding to the finite Galois theory by Chase, Harrison and Rosenberg are proved. After that, we consider Z(p)-extensions of commutative rings of characteristic p. We describe the structure of a Z(p)-extension and the Z(p)-module T(Z(p), R) of the isomorphism classes of Z(p)-extensions of R, via Witt vectors. Results on cyclic p(n)-extensions of rings of characteristic p, which are already known, are also recovered by direct and elementary methods.
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/0022-4049(91)90125-L
Date Issue: 1991
Appears in Collections:Unicamp - Artigos e Outros Documentos

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