Search for dissertations about: "combinatorics"

Showing result 1 - 5 of 33 swedish dissertations containing the word combinatorics.

  1. 1. Topological Combinatorics

    University dissertation from Stockholm : KTH

    Author : Alexander Engström; KTH.; [2009]

    Abstract : This thesis on Topological Combinatorics contains 7 papers. All of them but paper Bare published before.In paper A we prove that!i dim ˜Hi(Ind(G);Q) ! |Ind(G[D])| for any graph G andits independence complex Ind(G), under the condition that G\D is a forest. READ MORE

  2. 2. Combinatorial Methods in Complex Analysis

    University dissertation from Stockholm : Department of Mathematics, Stockholm University

    Author : Per Alexandersson; Stockholms universitet.; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; 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

  3. 3. Combinatorics and zeros of multivariate polynomials

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Nima Amini; KTH.; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Matematik; Mathematics;

    Abstract : This thesis consists of five papers in algebraic and enumerative combinatorics. The objects at the heart of the thesis are combinatorial polynomials in one or more variables. We study their zeros, coefficients and special evaluations. Hyperbolic polynomials may be viewed as multivariate generalizations of real-rooted polynomials in one variable. READ MORE

  4. 4. Enumerative combinatorics related to partition shapes

    University dissertation from Stockholm : KTH

    Author : Jonas Sjöstrand; KTH.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; partition shape; sign-imbalance; Robinson-Schensted correspondence; chess tableau; restricted word; cylindrical lattice walk; Poincaré polynomial; Bruhat interval; rook polynomial; pattern avoidance; partitionsform; teckenobalans; Robinson-Schensted-korrespondens; schacktablå; begränsade ord; cylindriska latticestigar; poincarépolynom; bruhatintervall; tornpolynom; mönsterundvikande permutation; MATHEMATICS; MATEMATIK;

    Abstract : This thesis deals with enumerative combinatorics applied to three different objects related to partition shapes, namely tableaux, restricted words, and Bruhat intervals. The main scientific contributions are the following. READ MORE

  5. 5. Combinatorics of genome rearrangements and phylogeny

    University dissertation from Stockholm : Matematik

    Author : Niklas Eriksen; KTH.; [2001]
    Keywords : ;

    Abstract : This thesis deals with combinatorial problems taken frombioinformatics. In particular, we study the problem ofinferring distances between bacterial species by looking attheir respective gene orders. We regard one of the gene ordersas a permutation of the other. READ MORE