Search for dissertations about: "Algebraic number"

Showing result 16 - 20 of 105 swedish dissertations containing the words Algebraic number.

  2. 16. Dynamics and limits in algebraic combinatorics

    Author : Samu Potka; Svante Linusson; Victor Reiner; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Matematik;

    Abstract : This thesis consists of the following six articles.Properties of the Edelman-Greene bijection. Edelman and Greene constructed a correspondence between reduced words of the reverse permutation and standard Young tableaux. READ MORE

  4. 17. Topics in computation, numerical methods and algebraic  geometry

    Author : David Eklund; Sandra di Rocco; Wolfram Decker; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Algebra and geometry; Algebra och geometri;

    Abstract : This thesis concerns computation and algebraic geometry. On the computational side we have focused on numerical homotopy methods. These procedures may be used to numerically solve systems of polynomial equations. The thesis contains four papers. READ MORE

  5. 18. Algebraic Methods for Modeling and Design in Control

    Author : Mats Jirstrand; Torkel Glad; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Computer algebra or symbolic computation has been recognized as an important tool in many engineering disciplines and continues to find new fields of application. In this thesis we investigate a number of constructive methods implemented as parts of computer algebra packages and utilize them both theoretically and practically in connection with problems in modeling and design of control systems. READ MORE

  6. 19. Knots and Surfaces in Real Algebraic and Contact Geometry

    Author : Johan Björklund; Tobias Ekholm; Grigory Mikhalkin; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Algebra and geometry; Algebra och geometri; Mathematics; Matematik;

    Abstract : This thesis consists of a summary and three articles. The thesis is devoted to the study of knots and surfaces with additional geometric structures compared to the classical smooth structure. READ MORE

  7. 20. Explicit algebraic subgrid-scale stress and passive scalar flux modeling in large eddy simulation

    Author : Amin Rasam; Arne V. Johansson; Shia-Hui Peng; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbulence; Large eddy simulation; explicit algebraic subgrid-scale model; passive scalar; stochastic modeling; backscatter; Fluid mechanics; Strömningsmekanik;

    Abstract : The present thesis deals with a number of challenges in the field of large eddy simulation (LES). These include the performance of subgrid-scale (SGS) models at fairly high Reynolds numbers and coarse resolutions, passive scalar and stochastic modeling in LES. READ MORE