Affinie smooth varieties with finte group of automorphisms.
Zbigniew Jelonek (1994)
Mathematische Zeitschrift
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Zbigniew Jelonek (1994)
Mathematische Zeitschrift
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Ernest Płonka (1968)
Colloquium Mathematicae
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Masaki Hanamura (1988)
Inventiones mathematicae
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Mashevitzky, G., Plotkin, B., Plotkin, E. (2002)
Electronic Research Announcements of the American Mathematical Society [electronic only]
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S.A. Huq (1972)
Publications de l'Institut Mathématique [Elektronische Ressource]
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David Sherman (2009)
Studia Mathematica
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In functional analysis, approximative properties of an object become precise in its ultrapower. We discuss this idea and its consequences for automorphisms of II₁ factors. Here are some sample results: (1) an automorphism is approximately inner if and only if its ultrapower is ℵ₀-locally inner; (2) the ultrapower of an outer automorphism is always outer; (3) for unital *-homomorphisms from a separable nuclear C*-algebra into an ultrapower of a II₁ factor, equality of the induced traces...
Giovanni Cutolo (1992)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni
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A characterization of central automorphisms of groups is given. As an application, we obtain a new proof of the centrality of power automorphisms.
M. Manetti (1997)
Revista Matemática de la Universidad Complutense de Madrid
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Fleury, Odile (1997)
Beiträge zur Algebra und Geometrie
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Hidalgo, Rubén A. (1994)
Annales Academiae Scientiarum Fennicae. Series A I. Mathematica
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William F. Keigher, V. Ravi Srinivasan (2011)
Banach Center Publications
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In this article, we study solutions of linear differential equations using Hurwitz series. We first obtain explicit recursive expressions for solutions of such equations and study the group of differential automorphisms of the solutions. Moreover, we give explicit formulas that compute the group of differential automorphisms. We require neither that the underlying field be algebraically closed nor that the characteristic of the field be zero.
A. Zajtz (1972)
Colloquium Mathematicae
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Gang Xiao (1996)
Journal für die reine und angewandte Mathematik
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