Sökning: "rational points"

Visar resultat 1 - 5 av 51 avhandlingar innehållade orden rational points.

  1. 1. Counting rational points on genus one curves

    Författare :Manh Hung Tran; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Diophantine equations; rational points; Elliptic curves; genus; descent; determinant method; cubic and quartic curves; genus;

    Sammanfattning : This thesis contains two papers dealing with counting problems for curves of genus one. We obtain uniform upper bounds for the number of rational points of bounded height on such curves. The main tools to study these problems are descent and various refined versions of Heath-Brown’s p-adic determinant method. LÄS MER

  3. 2. Rational points on cubic surfaces

    Författare :Niklas Broberg; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  4. 3. Counting Rational Points on Curves and Surfaces

    Författare :Niklas Broberg; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; rational point; bounded height; counting function; Batyrev-Manin conjecture; thin set; bounded height;

    Sammanfattning : .... LÄS MER

  5. 4. Den rationella fabriken : om funktionalismens rötter

    Författare :Lisa Brunnström; Umeå universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; industrial architecture; taylorism and modernism rational architecture; the rationalization movement daylight factories; Swedish factories factory planning;

    Sammanfattning : This thesis covers the period between 1900 and 1930 and deals with the planning and design of factory buildings during the emergence of taylorism in Sweden. It presents a new perspective where modernism stands out as a consequence of the rationalization movement. LÄS MER

  7. 5. Model Order Reduction with Rational Krylov Methods

    Författare :K. Henrik A. Olsson; Axel Ruhe; Volker Mehrmann; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Model order reduction; dual rational Arnoldi; rational Krylov; moment matching; eigenvalue computation; stability analysis; heat exchanger model; Numerical analysis; Numerisk analys;

    Sammanfattning : Rational Krylov methods for model order reduction are studied. A dual rational Arnoldi method for model order reduction and a rational Krylov method for model order reduction and eigenvalue computation have been implemented. It is shown how to deflate redundant or unwanted vectors and how to obtain moment matching. LÄS MER