Search for dissertations about: "Per Alexandersson"

Found 3 swedish dissertations containing the words Per Alexandersson.

  1. 1. Combinatorial Methods in Complex Analysis

    Author : Per Alexandersson; Boris Shapiro; Alexandre Eremenko; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; combinatorics; Schrödinger equation; Toeplitz matrix; sums of squares; Schur polynomials; matematik; Mathematics;

    Abstract : The theme of this thesis is combinatorics, complex analysis and algebraic geometry. The thesis consists of six articles divided into four parts.Part A: Spectral properties of the Schrödinger equationThis part consists of Papers I-II, where we study a univariate Schrödinger equation with a complex polynomial potential. READ MORE

  2. 2. On eigenvalues of the Schrödinger operator with a complex-valued polynomial potential

    Author : Per Alexandersson; Boris Shapiro; Ilpo Laine; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; schroedinger; even spectral determinant polynomial potential eigenvalue; Mathematical analysis; Analys; Mathematics; matematik;

    Abstract : In this thesis, we generalize a recent result of A. Eremenko and A. Gabrielov on irreducibility of the spectral discriminant for the Schroedinger equation with quartic potentials. READ MORE

  3. 3. Incubating Businesses

    Author : Anna Alexandersson; Chris Steyaert; Linnéuniversitetet; []
    Keywords : SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; Business incubation; entrepreneurship; organizational entrepreneurship; Ledarskap; entreprenörskap och organisation; Ledarskap; entreprenörskap och organisation; Business administration; Företagsekonomi;

    Abstract : The efficiency of business incubators is disputed, but they have attracted significant attention from policy-makers and are a part of economic policies worldwide. To ensure their efficiency, it has been suggested that more involvement in the ventures by the incubator management would be beneficial. READ MORE