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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

Phase transitions regularity of flat level sets /

Savin, Vasile Ovidiu. January 2003 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2003. / Vita. Includes bibliographical references. Available also from UMI Company.
2

Multiscale methods for elliptic partial differential equations and related applications

Chu, Chia-Chieh. Hou, Thomas Y. Hou, Thomas Y. January 1900 (has links)
Thesis (Ph. D.) -- California Institute of Technology, 2010. / Title from home page (viewed 06/21/2010). Advisor and committee chair names found in the thesis' metadata record in the digital repository. Includes bibliographical references.
3

A Study of Solutions of a Uniformly Elliptic Partial Differential Equation and of Subfunctions with Respect to the Equation

Shreve, Warren E. January 1963 (has links)
No description available.
4

Nonlinear elliptic boundary value problems at resonance

Shaw, Howard Charles, January 1975 (has links)
Thesis (Ph. D.)--University of Michigan, 1975. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 71-73).
5

Numerical solutions of nonlinear elliptic problem using combined-block iterative methods /

Liu, Fang. January 2003 (has links) (PDF)
Thesis (M.S.)--University of North Carolina at Wilmington, 2003. / Includes bibliographical references (leaf : 44).
6

Multiple positive solutions for classes of elliptic systems with combined nonlinear effects

Ali, Jaffar, January 2008 (has links)
Thesis (Ph.D.)--Mississippi State University. Department of Mathematics and Statistics. / Title from title screen. Includes bibliographical references.
7

Nonlinear second order parabolic and elliptic equations with nonlinear boundary conditions

Mavinga, Nsoki. January 2008 (has links) (PDF)
Thesis (Ph. D.)--University of Alabama at Birmingham, 2008. / Title from PDF title page (viewed Sept. 23, 2009). Additional advisors: Inmaculada Aban, Alexander Frenkel, Wenzhang Huang, Yanni Zeng. Includes bibliographical references.
8

Infinite semipositone systems

Ye, Jinglong, January 2009 (has links)
Thesis (Ph.D.)--Mississippi State University. Department of Mathematics and Statistics. / Title from title screen. Includes bibliographical references.
9

Sistemas elipticos semilineares não-homogeneos / Nonhomogeneous semilinear elliptic systems

Dos Santos, Ederson Moreira 10 October 2007 (has links)
Orientadores: Djairo Guedes de Figueiredo, Francisco Odair Vieira de Paiva / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Cientifica / Made available in DSpace on 2018-08-09T03:12:35Z (GMT). No. of bitstreams: 1 DosSantos_EdersonMoreira_D.pdf: 980783 bytes, checksum: 2dea209d1deff43e05e904ee8e9a1dac (MD5) Previous issue date: 2007 / Resumo: Neste trabalho consideramos duas classes de sistemas não homogêneos sendo que em certos casos uma dessas classes tranforma-se em um sistema gradiente, enquanto que a outra em um sistema de tipo Hamiltoniano. Analisamos as questões de existência, não-existênca, unicidade e multiplicidade de solu-ções.Para obter nossos resultados empregamos o método de subsolução e super-solução, minimização de funcionais, teorema da função implícita, teorema de multiplicadores de Lagrange, Teorema do Passo da Montanha, um teorema de representação de Riesz para alguns espaços de Sobolev e o Princípio de Concentração de Compacidade / Abstract: In this work we consider two classes of nonhomogeneous systems, where in certain cases one of these classes turns to be a gradient system, while the other one becomes a system of Hamiltonian type. We are concerned about the questions of existence, nonexistence, uniqueness and multiplicity of solutions. To obtain our results we apply the method of subsolutions and supersolutions, minimization of functionals, the Lagrange multiplier theorem, the Mountain Pass Theorem, a Riesz¿s representation theorem for certain Sobolev spaces and the Concentration-Compactness Principle / Doutorado / Doutor em Matemática
10

Soluções ground state para algumas classes de problemas elípticos / Ground state solutions for some classes of elliptic problems

Abreu, Rafael dos Reis, 1983- 23 August 2018 (has links)
Orientador: Marcelo da Silva Montenegro / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Matemática Estatística e Computação Científica / Made available in DSpace on 2018-08-23T11:08:01Z (GMT). No. of bitstreams: 1 Abreu_RafaeldosReis_D.pdf: 1052192 bytes, checksum: 6fe840dfe507b4cc6c5ad9f908da486a (MD5) Previous issue date: 2013 / Resumo: Neste trabalho, tratamos de resultados de existência de soluções ground state para algumas classes de problemas elípticos sobre espaços euclidianos ou sobre domínios exteriores. Nos casos em que consideramos um domínio exterior, consideramos a condição de fronteira de Dirichlet ou de Neumann. O fato de se considerar domínios não limitados naturalmente implica em algumas dificuldades como, por exemplo, a falta de compacidade. Quando isso ocorre, em geral, a condição Palais-Smale não é válida. Para contornar esta e outras dificuldades, usamos o Teorema do Passo da Montanha sem condição Palais-Smale, Lema de Lions e Teorema de Vitali. Em nosso estudo, utilizamos métodos variacionais explorando diversas técnicas para a obtenção de pontos críticos de funcionais associados a cada problema. Pontos críticos não nulos de cada funcional são soluções de seu respectivo problema / Abstract: In this work, we deal with existence of ground state solutions for some classes of elliptic problems on Euclidean spaces or on exterior domains. In cases where we consider an exterior domain, we consider the Dirichlet boundary condition or the Neumann boundary condition. Elliptic problems involving unbounded domains naturally have some difficulties, por example, the lack of compactness. When it occurs, in general, the Palais-Smale condition is not valid. To overcome this difficulty and others, we use the Mountain Pass Theorem without Palais-Smale condition, results due to Lions and the Vitali's Theorem. In our study, we use variational methods exploring techniques to obtain critical points of functionals related to each problem. Nonzero critical points of each functional are solutions of its respective problem / Doutorado / Matematica / Doutor em Matemática

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