Elliptic Partial Differential Equations
Mostrando 13-18 de 18 artigos, teses e dissertações.
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13. Uniqueness and nondegeneracy for problems involving p-laplacian in annuli / Unicidade e não-degenerescencia para problemas envolvendo p-laplaciano em aneis
Neste trabalho estudamos a unicidade e a não-degenerescência de soluções positi-vas radiais para problemas não-autônomos envolvendo o p-Iaplaciano em anéis e bolas, com condição de Neumann na parte interna do anel, e condição de Dirichlet na parte externa. Quando o domínio é uma bola, temos apenas a condição de Dirichlet. Consideraremos três
Publicado em: 2005
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14. Um Novo Perfil Interpolante Aplicado ao Método de Volumes Finitos em Situações Une e Bidimensionais / Um Novo Perfil Interpolante Aplicado ao Método de Volumes Finitos em Situações Une e Bidimensionais
In this report, a new scheme of discretization for the method of finite bulks, called FLEX which was proposed for a simulation of problems ruled by differential equations as type of elliptic and hyperbolic. Its performance was appraised through tests from the literature of numeric methods and through tests developed for all the report. The new scheme showed
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/12/2002
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15. SOLUÇÕES NUMÉRICAS PARA PLOBLEMAS DE OTIMIZAÇÃO DE FORMAS GEOMÉTRICAS ASSOCIADAS À EQUAÇÕES DIFERENCIAIS PARCIAIS ELÍTPTICAS / NUMERICAL SOLUTIONS FOR SHAPE OPTIMIZATION PROBLEMS ASSOCIATED WITH ELLIPTIC PARTIAL DIFFERENTIAL EQUATIONS
This work is directed at the problem of determining numerical solutions for shape optimization problems associated with elliptic partial differential equations. Our primarily motivation is the problem of determining optimal shapes in order to minimize the heat lost of a body, given a fixed volume of insulation and a fixed internal (or external) geometry. The
Publicado em: 1991
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16. Multilinear Littlewood-Paley estimates with applications to partial differential equations
We obtain a collection of multilinear Littlewood-Paley estimates, which we then apply to two problems in partial differential equations. The first problem is the estimation of the square root of an elliptic operator in divergence form, and the second is the estimation of solutions to the Cauchy problem for nondivergence-form parabolic equations.
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17. A STURM-LIOUVILLE THEOREM FOR NONLINEAR ELLIPTIC PARTIAL DIFFERENTIAL EQUATIONS*
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18. High accuracy finite difference approximation to solutions of elliptic partial differential equations
A flexible finite difference method is described that gives approximate solutions of linear elliptic partial differential equations, Lu = G, subject to general linear boundary conditions. The method gives high-order accuracy. The values of the unknown approximation function U are determined at mesh points by solving a system of finite difference equations Lh