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.
Marian Genčev (2019)
Communications in Mathematics
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The scope of this note is a self-contained presentation of a mathematical method that enables us to give an absolute upper bound for the difference of the Gini coefficients where represents the vector of the gross wages and represents the vector of the corresponding super-gross wages that is used in the Czech Republic for calculating the net wage. Since (as of June 2019) , the study of the above difference seems to be somewhat inaccessible for many economists. However, our estimate...
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.