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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Resultados de existência de solução para problemas elípticos no espaço das funções de variação limitada / Existence of solution for elliptic problems in the space of bounded variation functions

Silva, Letícia dos Santos [UNESP] 15 February 2018 (has links)
Submitted by Letícia dos Santos Silva null (leticiadstos@gmail.com) on 2018-03-04T13:10:40Z No. of bitstreams: 1 leticia_dissertacao.pdf: 941545 bytes, checksum: 75b9baf79f051810ab82bd9bb946dd83 (MD5) / Approved for entry into archive by Claudia Adriana Spindola null (claudia@fct.unesp.br) on 2018-03-05T11:45:13Z (GMT) No. of bitstreams: 1 silva_ls_me_prud.pdf: 941545 bytes, checksum: 75b9baf79f051810ab82bd9bb946dd83 (MD5) / Made available in DSpace on 2018-03-05T11:45:13Z (GMT). No. of bitstreams: 1 silva_ls_me_prud.pdf: 941545 bytes, checksum: 75b9baf79f051810ab82bd9bb946dd83 (MD5) Previous issue date: 2018-02-15 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Neste trabalho mostra-se a existência de solução de variação limitada para um problema envolvendo o operador 1− Laplaciano em um domínio exterior com condição de fronteira de Dirichlet. Para isso, será usada uma versão do Teorema do Passo da Montanha adequada a funcionais localmente lipschitzianos. As dificuldades na implementação de métodos variacionais no espaço das funções de variação limitada são múltiplas, entre elas, a falta de reflexividade, dificuldade de se usar condições de compacidade como a de Palais-Smale e ainda a falta de regularidade do funcional energia. / In this work we prove existence of bounded variation solution for a problem involving the 1-Laplacian operator in an exterior domain with Dirichlet boundary condition. For this, a version of the Mountain Pass Theorem to locally Lipschitz functionals is used. There are many difficulties in implementing variational methods in the space of limited variation functions, among them, lack of reflexivity, difficulty in using compactness conditions such as Palais-Smale and the lack of regularity of the functional energy.
2

Existência de soluções Blow-up via método de sub e supersolução para uma classe de problemas elípticos. / Existence of Blow-up solutions via sub and supersolution method for a class of elliptical problems.

SILVA, Ailton Rodrigues da. 05 August 2018 (has links)
Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-08-05T12:59:20Z No. of bitstreams: 1 AILTON RODRIGUES DA SILVA - DISSERTAÇÃO PPGMAT 2012..pdf: 874312 bytes, checksum: 1dc2f2515ff17b649766c1fa11f76b11 (MD5) / Made available in DSpace on 2018-08-05T12:59:20Z (GMT). No. of bitstreams: 1 AILTON RODRIGUES DA SILVA - DISSERTAÇÃO PPGMAT 2012..pdf: 874312 bytes, checksum: 1dc2f2515ff17b649766c1fa11f76b11 (MD5) Previous issue date: 2012-02 / CNPq / Nesta dissertação, estudamos a existência de solução blow-up para uma classe de problemas e sistemas elípticos. A principal ferramenta usada foi o Método de Sub e Supersolução, além de Regularidade Elíptica e alguns resultados de Equações Diferenciais Ordinárias. / In this dissertation, we study the existence of blow-up solution for some classes of elliptic problem, which include scalar problem and elliptic systems. The main tool used is the sub and super-solution methods combined with elliptic regularity and some results of Ordinary Differential Equations.

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