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Showing result 1 - 5 of 56 swedish dissertations matching the above criteria.

  2. 1. On the existence of complex-valued harmonic morphisms

    Author : Jonas Nordström; Matematik (naturvetenskapliga fakulteten); []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Harmonic morphisms; foliations; minimal submanifolds; Lie groups;

    Abstract : This thesis consists of 4 papers, their content is described below: Paper I. We present a new method for manufacturing complex-valued harmonic morphisms from a wide class of Riemannian Lie groups. This yields new solutions from an important family of homogeneous Hadamard manifolds. READ MORE

  4. 2. Some applications of representation theory in homogeneous dynamics and automorphic functions

    Author : Samuel Charles Edwards; Andreas Strömbergsson; Henrik Schlichtkrull; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; automorphic functions; effective equidistribution; Eisenstein series; homogeneous dynamics; horospheres; lattices; Lie groups; representation theory; Mathematics; Matematik;

    Abstract : This thesis consists of an introduction and five papers in the general area of dynamics and functions on homogeneous spaces. A common feature is that representation theory plays a key role in all articles. READ MORE

  5. 3. Holomorphic automorphisms of Danielewski surfaces

    Author : Andreas Lind; Frank Kutzschebauch; Egmont Porten; Frank Wikström; Erik Low; Mittuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Danielewski surfaces; holomorphic; automorphisms; Lie groups; Algebra; geometry and mathematical analysis; Algebra; geometri och analys;

    Abstract : In this thesis we define the notion of an overshear on a Danielewskisurface. Next we show that the group generated by the overshears is dense in the component of the identity of the automorphism group. READ MORE

  6. 4. Geometric control methods for nonlinear systems and robotic applications

    Author : Claudio Altafini; KTH; []
    Keywords : Geometric control; Differential geometric methods; Nonlinear control systems; Control of mechanical systems; Robot dynamics and control; Lie groups; Variational problems; Group symmetry; Reachability; Switching systems;

    Abstract : .... READ MORE

  7. 5. Application of Differential Geometry to Elasticity and Corresponding Discrete Models

    Author : Nina Lautersztajn-S.; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mechanical systems; differential geometry; isoparametric four-node elements; Lie groups; non-linear elasticity; elasticity; finite element method;

    Abstract : The amazing development in technology and industry during the last half of the twentieth century has opened totally new research fields. One of them is computational mechanics. Suddenly very complex, three-dimensional nonlinear engineering problems could be solved as a consequence of explosive advances in computers and numerical schemes. READ MORE