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Showing result 1 - 5 of 18 swedish dissertations matching the above criteria.

  1. 1. Hopf Invariants in Real and Rational Homotopy Theory

    University dissertation from Stockholm : Department of Mathematics, Stockholm University

    Author : Felix Wierstra; Stockholms universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Rational homotopy theory; Real homotopy theory; operads; Hopf invariants; matematik; Mathematics;

    Abstract : In this thesis we use the theory of algebraic operads to define a complete invariant of real and rational homotopy classes of maps of topological spaces and manifolds. More precisely let f,g : M -> N be two smooth maps between manifolds M and N. READ MORE

  2. 2. Hopf and Frobenius algebras in conformal field theory

    University dissertation from Karlstad : Karlstad University Press

    Author : Carl Stigner; Karlstads universitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; conformal field theory; category theory; Hopf algebra; Frobenius algebra; coends; mapping class group; defect lines; factorization constraints; Physics; Fysik;

    Abstract : There are several reasons to be interested in conformal field theories in two dimensions. Apart from arising in various physical applications, ranging from statistical mechanics to string theory, conformal field theory is a class of quantum field theories that is interesting on its own. First of all there is a large amount of symmetries. READ MORE

  3. 3. Irreducible Representations of Quantum Affine Algebras

    University dissertation from Karlstad : Karlstad University Press

    Author : Jesper Thorén; Lunds universitet.; Lund University.; [2000]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Number Theory; Matematik; Mathematics; quantum evaluation modules; highest weight representations; quantum Yang-Baxter equation; quantum affine algebras; quantum groups; comultiplication; Hopf algebras; affine Lie algebras; field theory; algebraic geometry; algebra; group theory; Talteori; fältteori; algebraisk geometri; gruppteori;

    Abstract : We construct finite-dimensional representations of the quantum affine algebra associated to the simple finite-dimensional Lie algebra sl(n+1). The module structure is defined on the vector space tensor product of the fundamental representations of the quantum affine algebra. READ MORE

  4. 4. Heat loss to the ground from a building : slab on the ground and cellar

    University dissertation from Byggnadsfysik LTH, Lunds Tekniska Högskola

    Author : Carl-Eric Hagentoft; [1988]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Heat loss; heat transfer in the ground; thermal analysis; slab; cellar; crawl-space;

    Abstract : Heated buildings induce a heat flow from the building foundation into the ground. The topic of this thesis is the thermal process in the ground and, in particular, the heat losses from the building to the ground. Foundations of the three types slab on the ground, cellar, and crawl-space are dealt with. The crawl-space is treated in separate report. READ MORE

  5. 5. Two-Barrier Problems in Applied Probability: Algorithms and Analysis

    University dissertation from Centre for Mathematical Sciences, Lund University

    Author : Mats Pihlsgård; Lunds universitet.; Lund University.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Statistics; operations research; programming; actuarial mathematics; Statistik; Matematik; Mathematics; Naturvetenskap; Natural science; Reflection; Stochastic processes; Applied probability; Queueing; operationsanalys; programmering; aktuariematematik;

    Abstract : Popular Abstract in Swedish Avhandlingen består av fem upsatser (A-E): I uppsats A undersöks tidsberoende egenskaper hos kölängdsprocessen hos ett kösystem med flera betjänter under mycket allmänna Markovska ankomstprocesser. I uppsats B undersöks en endimensionell slumpvandring som reflekteras i två barriärer. READ MORE