Search for dissertations about: "space-time"

Showing result 21 - 25 of 151 swedish dissertations containing the word space-time.

  2. 21. Convergence analysis of domain decomposition methods : Nonlinear elliptic and linear parabolic equations

    Author : Emil Engström; Matematik LTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nonoverlapping domain decomposition; Steklov--Poincaré operator; Robin--Robin method; Convergence; Nonlinear elliptic equation; Space-time;

    Abstract : Domain decomposition methods are widely used tools for solving partial differential equations in parallel. However, despite their long history, there is a lack of rigorous convergence theory for equations with non-symmetric differential operators. This includes both nonlinear elliptic equations and linear parabolic equations. READ MORE

  4. 22. A weak space-time formulation for the linear stochastic heat equation

    Author : Matteo Molteni; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Inf-sup theory; Stochastic heat equation; Petrov-Galerkin; Finite element; Crank-Nicolson; Quasi-optimality; Finite element;

    Abstract : The topic covered in this thesis is the introduction of a new formulation for the linear stochastic heat equation driven by additive noise, based on the space-time variational formulation for its deterministic counterpart. Having a variational formulation allows the use of the so called inf-sup theory in order to obtain results of existence and uniqueness in a relatively simple way. READ MORE

  5. 23. A study of the unitary representations of some space-time transformation groups

    Author : Staffan Ström; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : .... READ MORE

  6. 24. Media and the refugee camp : The historical making of space, time, and politics in the modern refugee regime

    Author : Philipp Seuferling; Heike Graf; Anne Kaun; Staffan Ericson; Myria Georgiou; Södertörns högskola; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; HUMANIORA; HUMANITIES; refugee camp; media practices; media technology; refugee regime; forced migration; Germany; media history; heterotopia; space; archive; media infrastructure; memory; witnessing; resistance; Kritisk kulturteori; Critical and Cultural Theory; Östersjö- och Östeuropaforskning; Baltic and East European studies;

    Abstract : This dissertation explores media practices in and of refugee camps. In the wake of forced migration becoming ever more digitized both in its experiences and its governance, this thesis historicizes media practices in refugee camps as a space of the refugee regime. READ MORE

  7. 25. Graphical representations of Ising and Potts models : Stochastic geometry of the quantum Ising model and the space-time Potts model

    Author : Jakob Erik Björnberg; Anders Björner; Jeffrey Steif; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Quantum Ising model; Ising model; Potts model; random-cluster model; random-current representation; random-parity representation; differential inequality; phase transition; Discrete mathematics; Diskret matematik;

    Abstract : HTML clipboard Statistical physics seeks to explain macroscopic properties of matter in terms of microscopic interactions. Of particular interest is the phenomenon of phase transition: the sudden changes in macroscopic properties as external conditions are varied. READ MORE