Search for dissertations about: "random matrix."

Showing result 1 - 5 of 88 swedish dissertations containing the words random matrix..

  1. 1. Asymptotics of random matrices and matrix valued processes

    University dissertation from Uppsala : Matematiska institutionen

    Author : Stefan Israelsson; Uppsala universitet.; [2001]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Random matrices; singular interaction; spectral distribution; fluctuation limit; distribution valued processes; MATEMATIK; MATHEMATICS; MATEMATIK; matematisk statistik; Mathematical Statistics;

    Abstract : This thesis contains three parts. In the first two papers we consider spectral properties of symmetric matrices with elements consisting of independent Ornstein Uhlenbeck processes. The eigenvalues behave as a particle system on the real line with singular interaction consisting of electrostatic repulsion and a linear restoring force. READ MORE

  2. 2. Topics on Game Theory

    University dissertation from Chalmers University of Technology

    Author : Emilio Bergroth; Göteborgs universitet.; Gothenburg University.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; zero-sum game; optimal strategy; random matrix; iterated prisoner s dilemma; spatial game; cooperation; deterministic graph; binomial random graph;

    Abstract : .... READ MORE

  3. 3. Correlated random effects models for clustered survival data

    University dissertation from Chalmers University of Technology

    Author : Frank Eriksson; Göteborgs universitet.; Gothenburg University.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Survival analysis; frailty model; competing risks; random effects; case-cohort; routine register; semiparametric; competing risks; case-cohort; semiparametric; Survival analysis; random effects; routine register; frailty model;

    Abstract : Frailty models are frequently used to analyse clustered survival data in medical contexts. The frailties, or random effects, are used to model the association between individual survival times within clusters. READ MORE

  4. 4. Degrees in Random Graphs and Tournament Limits

    University dissertation from Uppsala : Department of Mathematics

    Author : Erik Thörnblad; Uppsala universitet.; [2018]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Random graphs; degree distributions; degree sequences; graph limits; tournaments; Mathematics; Matematik;

    Abstract : This thesis consists of an introduction and six papers on the topics of degree distributions in random graphs and tournaments and their limits.The first two papers deal with a dynamic random graph, evolving in time through duplication and deletion of vertices and edges. In Paper I we study the degree densities of this model. READ MORE

  5. 5. Limit theorems for generalizations of GUE random matrices

    University dissertation from Stockholm : KTH

    Author : Martin Bender; KTH.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Random matrices; Central limit theorem; Dyson s Brownian motion; Interacting diffusion; Point process; Non-Hermitian; Scaling limit; MATHEMATICS; MATEMATIK;

    Abstract : This thesis consists of two papers devoted to the asymptotics of random matrix ensembles and measure valued stochastic processes which can be considered as generalizations of the Gaussian unitary ensemble (GUE) of Hermitian matrices H=A+A†, where the entries of A are independent identically distributed (iid) centered complex Gaussian random variables.In the first paper, a system of interacting diffusing particles on the real line is studied; special cases include the eigenvalue dynamics of matrix-valued Ornstein-Uhlenbeck processes (Dyson's Brownian motion). READ MORE