Sökning: "Random walk"

Visar resultat 1 - 5 av 58 avhandlingar innehållade orden Random walk.

  1. 1. Random walk in random environment and mixing

    Författare :Stefan Svanberg; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Mathematics; Random walk in random environment; law of large numbers; central limit theorem; weak invariance principle; law of the iterated logarithm; Markov chain; first passage time; mixing; stationary sequence; MATEMATIK; MATHEMATICS; MATEMATIK; matematisk statistik; Mathematical Statistics;

    Sammanfattning : A random walk in a random environment is obtained by first choosing an environment according to some probability measure (the random environment).Once the environment is chosen, a random walk is performed in that particularenvironment. LÄS MER

  2. 2. Random iteration of isometries

    Författare :Markus Ådahl; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Mathematics; iterated function system; isometry; central limit theorem; weak invariance principle; law of the iterated logarithm; random walk; MATEMATIK; MATHEMATICS; MATEMATIK; Mathematics; matematik;

    Sammanfattning : This thesis consists of four papers, all concerning random iteration of isometries. The papers are:I. Ambroladze A, Ådahl M, Random iteration of isometries in unbounded metric spaces. Nonlinearity 16 (2003) 1107-1117. LÄS MER

  3. 3. Random Loewner Chains

    Författare :Carl Fredrik Johansson; Michael Benedicks; Ilia Binder; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Loewner differential equation; Schramm-Loewner evolution; loop-erased random walk; Hastings-Levitov model; MATHEMATICS; MATEMATIK;

    Sammanfattning : This thesis contains four papers and two introductory chapters. It is mainly devoted to problems concerning random growth models related to the Loewner differential equation. LÄS MER

  4. 4. Random Geometry and Reinforced Jump Processes

    Författare :Tuan-Minh Nguyen; Probability and Inference Theory Group; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; random polygons; products of random matrices; vertex-reinforced jump processes; pseudotrajectories; random walks in simplexes; Markov chains in a general state space;

    Sammanfattning : This thesis comprises three papers studying several mathematical models related to geometric Markov processes and random processes with reinforcements. The main goal of these works is to investigate the dynamics as well as the limiting behaviour of the models as time goes to infinity, the existence of invariant measures and limiting distributions, the speed of convergence and other interesting relevant properties. LÄS MER

  5. 5. A Random Walk in Statistical Physics

    Författare :Pontus Svensson; Chalmers University of Technology; []
    Nyckelord :;

    Sammanfattning : This thesis deals with some aspects of the physics of disordered systems. It consists of four papers and an introductory part. An introduction, suitable for physicists, to theoretical computer science and computational complexity is contained in chapter 2. LÄS MER