Sökning: "torus actions"

Hittade 3 avhandlingar innehållade orden torus actions.

1. 1. Algebraic C*-actions and homotopy continuation

   Författare :David Eklund; Sandra Di Rocco; Chris Peterson; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; torus actions; homotopy continuation; MATHEMATICS; MATEMATIK;

   Sammanfattning : Let X be a smooth projective variety over C equipped with a C*-action whose fixed points are isolated. Let Y and Z be subvarieties of complementary dimentions in X which intersect properly. LÄS MER

3. 2. Rigidity properties of certain discrete solvable group actions on tori

   Författare :Boris Petkovic; Danijela Damjanovic; Maria Saprykina; Livio Flaminio; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Matematik; Mathematics;

   Sammanfattning :  The main results of this thesis provide smooth classification of large classes of perturbations of certain multidimensional time dynamical systems: they show a form of preservation of differentiable structure under small perturbations. In our work we obtain results for systems with very different dynamical properties. LÄS MER

4. 3. Prestress in Nature and Technics

   Författare :Alexander Sehlström; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HUMANIORA; HUMANITIES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Geometrical stiffness; Prestress; Form finding; Architecture; Structural design; Stress pattern; Engineering; Conceptual design;

   Sammanfattning : To direct the forces of nature is a central task in the creation of spaces and load-carrying structures for architecture. This research investigates how prestress can be used as a design tool for the creation of material efficient and well-functioning structures, and in early design stages contribute to sustainable, functional and beautiful architecture. LÄS MER