Errata-Corrige : “Canonical surfaces with and ”
Ciro Ciliberto (1983)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
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Ciro Ciliberto (1983)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
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Kaori Yamazaki (2010)
Studia Mathematica
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Let c be the Banach space consisting of all convergent sequences of reals with the sup-norm, the set of all bounded continuous functions f: A → c, and the set of all functions f: X → c which are continuous at each point of A ⊂ X. We show that a Tikhonov subspace A of a topological space X is strong Choquet in X if there exists a monotone extender . This shows that the monotone extension property for bounded c-valued functions can fail in GO-spaces, which provides a negative answer...
S. Pilipović (1982)
Matematički Vesnik
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Lamberto Cattabriga, Luisa Zanghirati (1990)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni
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The surjectivity of the operator from the Gevrey space , , onto itself and its non-surjectivity from to is proved.
Sergio Campanato (1992)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni
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Let be a bounded open convex set of class . Let be a non linear operator satisfying the condition (A) (elliptic) with constants , , . We prove that a number is an eigenvalue for the operator if and only if the number is an eigen-value for the operator . If , the two systems and have the same solutions. In particular, also the eventual eigen-values of the operator should all be negative. Finally, we obtain a sufficient condition for the existence of solutions ...
Kazimierz Urbanik (1969)
Applicationes Mathematicae
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Marek Galewski (2007)
Bollettino dell'Unione Matematica Italiana
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We provide a duality theory and existence results for a operator equation where is not necessarily a monotone operator. We use the abstract version of the so called dual variational method. The solution is obtained as a limit of a minimizng sequence whose existence and convergence is proved.
M. Van de Vel
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CONTENTS0. Introduction......... .............................................................51. Topological convexity structures.......................................62. Half-spaces and related results......................................123. Pseudo-boundaries........................................................254. The Krein-Milman theorem.............................................335. Pseudo-interiority...........................................................406. The existence...