Search for dissertations about: "rikard bögvad"

Showing result 1 - 5 of 12 swedish dissertations containing the words rikard bögvad.

  2. 1. Graded lie algebras in local algebra and rational homotopy

    Author : Rikard Bøgvad; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : This thesis consists of three papers, [A – C]The old conjecture that Poincaré-series of local noetherian rings are rational was disproved by Anick in 1979. Building upon his counter-example, as analyzed by Löfwall-Roos, I construct a Gorenstein ring with transcendental Poincaré-series; by a method of Roos this also gives a manifold whose loopspace has transcendental Poinaré-Betti series. READ MORE

  4. 2. Asymptotic distribution of zeros of a certain class of hypergeometric polynomials

    Author : Addisalem Abathun; Rikard Bögvad; Maurice Duits; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Hypergeometric polynomials; Potential theory; Mathematics; matematik;

    Abstract : The thesis consists of two papers, both treating hypergeometric polynomials, and a short introduction. The main results are as follows. READ MORE

  5. 3. Direct Images Of Locally Constant Sheaves on Complements to Plane Line Arrangements

    Author : Iara Alvarinho Gonçalves; Rikard Bøgvad; Wojciech Chacholski; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Direct Images; Locally Constant Sheaves; Irreducibility; matematik; Mathematics;

    Abstract : .... READ MORE

  6. 4. Decomposition of perverse sheaves

    Author : Iara Cristina Alvarinho Gonçalves; Rikard Bögvad; Nero Budur; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Sheaf cohomology; hyperplane arrangements; D-modules; Mathematics; matematik;

    Abstract : This PhD thesis consists in three papers in which we describe irreducibility conditions and the number of factors in a composition series of certain perverse sheaves. We study some particular cases, providing examples and showing how to explicitly use perverse sheaves to obtain precise results. READ MORE

  7. 5. Approaching Proof in a Community of Mathematical Practice

    Author : Kirsti Hemmi; Rikard Bögvad; Barbara Jaworski; Gila Hanna; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; proof; university mathematics; community of practice; participation; reification; MATHEMATICS; MATEMATIK;

    Abstract : This thesis aims to describe how students encounter proof in a community of mathematical practice at a mathematics department and how they are drawn to share mathematicians’ views and knowledge of proof. Considering the department as a community of practice where the joint enterprise is learning mathematics in a broad sense made it possible to perceive the newcomers as active participants in the practice. READ MORE