Topological degree and application to a parabolic variational inequality problem.
Addou, A., Mermri, B. (2001)
International Journal of Mathematics and Mathematical Sciences
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Addou, A., Mermri, B. (2001)
International Journal of Mathematics and Mathematical Sciences
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Genaro López Acedo (1991)
Collectanea Mathematica
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A useful property of the Brouwerdegree relates the degree of a composition of maps to the degree of each map. This property, which can be generalized for the Leray Schauder degree and in some cases for the A-proper maps is called the Product Formula. In a previous paper we developed a generalized degree theory for a class of mappings, this class contains the class of A-proper mappings and compact mappings. In this paper we prove a generalization of the Product Formula when one factor...
W. Kryszewski, Bogdan Przeradzki (1985)
Fundamenta Mathematicae
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Mustonen, Vesa
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Felix Browder (1968)
Studia Mathematica
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Bogdan Przeradzki (1984)
Fundamenta Mathematicae
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Michal Fečkan, Richard Kollár (1999)
Applications of Mathematics
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The Leray-Schauder degree is extended to certain multi-valued mappings on separable Hilbert spaces with applications to the existence of weak periodic solutions of discontinuous semilinear wave equations with fixed ends.