Sökning: "G-convergence"

Visar resultat 1 - 5 av 10 avhandlingar innehållade ordet G-convergence.

  1. 1. G-Convergence and Homogenization of some Monotone Operators

    Detta är en avhandling från Östersund : Mid Sweden Univ

    Författare :Marianne Olsson; Mittuniversitetet.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; G-convergence; homogenization; two-scale convergence; MATHEMATICS; MATEMATIK;

    Sammanfattning : In this thesis we investigate some partial differential equations with respect to G-convergence and homogenization. We study a few monotone parabolic equations that contain periodic oscillations on several scales, and also some linear elliptic and parabolic problems where there are no periodicity assumptions. LÄS MER

  2. 2. Reiterated homogenization and G-convergence for some sequences of monotone operators

    Detta är en avhandling från Östersund : Mittuniversitetet

    Författare :Marianne Olsson; Mittuniversitetet.; Mittuniversitetet.; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Homogenization; G-convergence; Multiple scales; Monotone operators; MATHEMATICS; MATEMATIK;

    Sammanfattning : In this thesis, the main focus is on G-convergence and homogenization of monotone parabolic equations with multiple scales. This kind of equation is examined with respect to existence and uniqueness of the solution, in view of the properties of some monotone operators. LÄS MER

  3. 3. G-convergence and homogenization for some monotone operators with multiple scales

    Detta är en avhandling från Östersund : Mittuniversitetet

    Författare :Liselott Flodén; Mittuniversitetet.; Mittuniversitetet.; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; G-convergence; homogenization; monotone operators; multiscale convergence; parabolic equations; MATHEMATICS; MATEMATIK;

    Sammanfattning : This thesis deals with questions concerning the convergence of sequences of functions and operators. G-convergence is studied for elliptic and parabolic equations and the necessary investigations of the properties of certain monotone operators are made. LÄS MER

  4. 4. G-Convergence and Homogenization of some Sequences of Monotone Differential Operators

    Detta är en avhandling från Östersund : Mittuniversitetet

    Författare :Liselott Flodén; Mittuniversitetet.; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; G-convergence; Homogenization; Multiscale convergence; Two-scale convergence; Monotone opertors; Functional analysis; Partial differential equations; MATHEMATICS Algebra; geometry and mathematical analysis Mathematical analysis; MATEMATIK Algebra; geometri och analys Analys;

    Sammanfattning : This thesis mainly deals with questions concerning the convergence of some sequences of elliptic and parabolic linear and non-linear operators by means of G-convergence and homogenization. In particular, we study operators with oscillations in several spatial and temporal scales. LÄS MER

  5. 5. The Dirac Operator; From Numerics to the Theory of G-convergence

    Detta är en avhandling från Göteborg : University of Gothenburg

    Författare :Hasan Almanasreh; Göteborgs universitet.; Gothenburg University.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Dirac operator; spuriousity; cubic Hermitian; stability parameter; G-convergence; ¡-convergence; spectral measure; quadratic form;

    Sammanfattning : We consider two main issues concerning the Dirac operator, the first is widelyknown as the appearance of spurious eigenvalues within the spectrum. The secondis the study of the asymptotic behavior of the eigenvalues for a family ofDirac operators with oscillatory potential added to the Coulomb-Dirac Hamiltonian. LÄS MER