A-endomorphismes de A{X} |
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Authors: | J B Castillon A Micali |
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Institution: | 1. Institut d'Etudes Supérieures Scientifiques, Centre Universitaire de la Réunion, B.P. no5, 97490, Sainte Clotilde, La Réunion, France 2. U.E.R. de Mathématiques, Université de Montpellier II, Place Eugéne Bataillon, 34060, Montpellier, France
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Abstract: | The idea to write this paper was the completion of the paper of N. Sankaran (cf.6]). In fact, in his theorem, he suppose that all automorphisms of the restricted power series rings with respect to the m-adic topology of the maximal ideal of a local ring is anautomorphism by substitution. But this is true for all injective endomorphisms (see our Proposition 1.5.). We study here different classes of endomorphisms of the restricted power series rings with respect to an arbitrary non nilpotent ideal in a commutative ring. To do this, we follow very closely the techniques of M.J. O'Malley concerning the rings of power series, but adapted to the case of the rings of restricted power series (cf.3],4]). |
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