Existence Theorems
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. ARISTOTLE’S ARGUMENT FROM UNIVERSAL MATHEMATICS AGAINST THE EXISTENCE OF PLATONIC FORMS
Abstract In Metaphysics M.2, 1077a9-14, Aristotle appears to argue against the existence of Platonic Forms on the basis of there being certain universal mathematical proofs which are about things that are ‘beyond’ the ordinary objects of mathematics and that cannot be identified with any of these. It is a very effective argument against Platonism, becaus
Manuscrito. Publicado em: 25/11/2019
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2. From weierstrass to ky fan theorems and existence results on Optimization and Equilibrium Problems
In this work, we study coerciveness notions and their implications to existence conditions. We start with the presentation of classical ideas of coerciveness in the framework of Optimization Theory, and, then, using a classical technical result, introduced by Ky Fan in 1961, we extend these ideas first to Optimization Problems and then to Equilibrium Problem
Pesqui. Oper.. Publicado em: 16/07/2013
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3. Existência e homogeneização para um problema elíptico com fronteira livre não estacionária / Existence and homogenization for an elliptic problem with nonstationary free boundary
In this dissertation we study an elliptic problem in a bounded Lipschitz domain. Part of the boundary is moving and oscillates rapidly in the variable representing the space. Thus, we have a multi-scale free boundary problem. This problem has applications, for instance, in the construction of semiconductor films taking into account that the surface of the fi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/05/2012
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4. Variedades com curvatura prescrita : resultados de existÃncia, unicidade, rigidez e bifurcaÃÃo / Manifolds with prescribe curvature: results of existence uniqueness, rigidity and bifurcation
We present several results of existence, uniqueness, rigidity and bifurcation for the problem of prescribing various geometric structures on Riemannian manifolds, among which include: i) deformation and rigidity for 2k-Einstein structures on manifolds with constant (2k − 2)-sectional curvature; ii) conformal deformation of metrics in the context of the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/02/2012
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5. Relações de referencia e aplicações / Recurrent relations and applications
This study is about Recurrence Relations and some of their methods of resolution. We tried to generate an easy-to-read-text which stimulates the reader to proceed and to deepen his study about this subject. Three resolution methods with their theorems and demonstrations were studied: the method for first order recurrences, the characteristic root method and
Publicado em: 2010
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6. Sobre teoremas de equilíbrio de Nash / On Nash equilibrium theorems
In this work, applying methods of Algebraic Topology, we obtain new versions of the Nash equilibrium theorem. We define a concept of local equilibrium for non-cooperative games, the socalled weak local equilibrium, and we prove its existence when the spaces of strategies are differentiable manifolds and the payoff functions are continuously differentiable. W
Publicado em: 2010
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7. Platonismo e naturalismo em matemática: os axiomas da teoria dos conjuntos
Working with demonstrations is the main activity of a mathematician. In mathematics, most propositions accepted as true ones are liable to demonstration, in other words, they are seen as theorems. But a demonstration needs axioms to start the proving process. The same process occurs in the Set Theory, since the Set Theory is a formal theory. A set theoretic
Publicado em: 2010
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8. Existência e concentração de soluções para sistemas elípticos com condição de Neumann / Existence and concentration of solutions to elliptic systems with Neumann boundary conditions.
Estudamos uma classe de sistemas elípticos - elipson POT 2DELTAu + u = g(v) em ÔMEGA- elipson POT 2DELTAv + v f(u) em ÔMEGA PARTIALu SOBRE PARTIAL n = PARTIAL v SOBRE PARTIAL n = O sobre "PARTIALÔMEGAonde ÔMEGA ESTA CONTIDO EM R POT. Né um domínio limitado, com bordo regular e N >ou =3. As não linearidades f e g são funções com crescimento superli
Publicado em: 2008
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9. Study of a class of quasilinear Schrodinger equation / Estudo de uma classe de equações de Schrodinger quase-lineares
In this work, we study questions related to existence, multiplicity and concentration behavior of standing waves, for a class of quasilinear Schrödinger equations, arising, for example, in Plasma Physics. To obtain our results, we use variational methods, such as, minimax theorems and also regularity theory of elliptic equations of second order
Publicado em: 2007
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10. Convolution equations on spaces of entire functions of a given type and order / Equações de convolução em espaços de aplicações quase-nucleares de um dado tipo e uma dada ordem
In this work we introduce the spaces of (s;m(r; q))-summing functions of a given type and order defined in E, and the spaces of (s; (r; q))-quasi-nuclear functions of a given type and order defined in E, and we prove that the Fourier-Borel transform identify the dual of the space of (s; (r; q))-quasi-nuclear functions of a given type and order defined in E,
Publicado em: 2007
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11. Equações de convolução em espaços de aplicações quase-nucleares de um dado tipo e uma dada ordem / Convolution equations on spaces of entire functions of a given type and order
In this work we introduce the spaces of (s;m(r; q))-summing functions of a given type and order defined in E, and the spaces of (s; (r; q))-quasi-nuclear functions of a given type and order defined in E, and we prove that the Fourier-Borel transform identify the dual of the space of (s; (r; q))-quasi-nuclear functions of a given type and order defined in E,
Publicado em: 2007
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12. Stratification Theory and regularity conditions / Teoria de estratificação e condições de regularidade
In the present dissertation we do a study of algebraic, semialgebraic, analytic, semianalytic and subanalytic sets, real and complex, through the regularity conditions of the stratification of these sets. The basic idea in stratification is to decompose a singular space into manifolds; and the regularity conditions, is a control of how these manifolds fit to
Publicado em: 2007