Search for dissertations about: "Nils Svanstedt"

Showing result 1 - 5 of 8 swedish dissertations containing the words Nils Svanstedt.

  2. 1. G-convergence and homogenization of sequences of linear and nonlinear partial differential operators

    Author : Nils Svanstedt; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Matematik;

    Abstract : In this thesis we study G-convergence for sequences of linear and nonlinear elliptic and parabolic problems. We also study the special case of homogenization for such problems. READ MORE

  4. 2. Homogenization of some scales of partial differential equations

    Author : Nils Svanstedt; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Matematik;

    Abstract : .... READ MORE

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

    Author : Liselott Flodén; Anders Holmbom; Nils Svanstedt; Mårten Gulliksson; Björn Birnir; Mittuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; G-convergence; Homogenization; Multiscale convergence; Two-scale convergence; Monotone opertors; Functional analysis; Partial differential equations; Mathematical analysis; Analys;

    Abstract : 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. READ MORE

  6. 4. Multi-scale methods for wave propagation in heterogeneous media

    Author : Henrik Holst; Bjorn Engquist; Nils Svanstedt; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Numerical analysis; Numerisk analys;

    Abstract : Multi-scale wave propagation problems are computationally costly to    solve by traditional techniques because the smallest scales must be    represented over a domain determined by the largest scales of the    problem.  We have developed new numerical methods for multi-scale wave    propagation in the framework of heterogeneous multi-scale methods. READ MORE

  7. 5. G-Convergence and Homogenization of some Monotone Operators

    Author : Marianne Olsson; Anders Holmbom; Nils Svanstedt; Mårten Gulliksson; Jan Françu; Mittuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; G-convergence; homogenization; two-scale convergence; MATHEMATICS; MATEMATIK;

    Abstract : 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. READ MORE