Search for dissertations about: "branch point"

Showing result 1 - 5 of 47 swedish dissertations containing the words branch point.

  2. 1. Arithmetic of three-point covers

    Author : Björn Selander; Siegfried Bosch; Uppsala universitet; []
    Keywords : Algebra and geometry; Algebra och geometri;

    Abstract : Any cover of the Riemann sphere with rational branch points is known to be defined over the algebraic numbers. Hence the Galois group of the rationals acts on the category of such branched covers. Particulars about this action are still scarce, even in the simplest non-abelian case, the case with just three branch points. READ MORE

  4. 2. Branch Identification in Elastic Stability Analysis

    Author : Anders Magnusson; Hållfasthetslära; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vacuum technology; hydraulics; Mechanical engineering; Produktionsteknik; Production technology; FEM; computer simulation; bifurcation; stability; vibration and acoustic engineering; Maskinteknik; hydraulik; vakuumteknik; vibrationer; akustik;

    Abstract : In this thesis, methods to determine the static postbuckling behaviour of elastic structures undergoing large deformations, are considered and developed. Since the governing non-linear equations usually becomes too complex to be handled analytically, the main focus has been on developing methods that can be incorporated into a numerical solution scheme, such as the finite element method. READ MORE

  5. 3. Prenyltransferases : branch-point enzymes in the biosynthesis of cholesterol, dolichol, ubiquinone and prenylated proteins

    Author : Johan Ericsson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : .... READ MORE

  6. 4. Structure and mechanism of iron and magnesium chelatases - at the heme-chlorophyll branch-point

    Author : Michel Fodje; Lunds universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Molecular biophysics; pi-helix; secondary structure; AAA; porphyrin metallation; chelatase; Molekylär biofysik;

    Abstract : Tetrapyrroles are synthesised through a single branched biosynthetic pathway. Heme and chlorophyll are synthesised from the common intermediate protoporphyrin IX at the heme-chlorophyll branch-point. READ MORE

  7. 5. On the Branch Loci of Moduli Spaces of Riemann Surfaces

    Author : Gabriel Bartolini; Milagros Izquierdo; Allen Broughton; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The spaces of conformally equivalent Riemann surfaces, Mg where g ≥ 1, are not manifolds. However the spaces of the weaker Teichmüller equivalence, Tg are known to be manifolds. The Teichmüller space Tg is the universal covering of Mg and Mg is the quotient space by the action of the modular group. READ MORE