Sökning: "Isac Hedén"

Hittade 2 avhandlingar innehållade orden Isac Hedén.

1. 1. Russell’s hypersurface from a geometric point of view

   Författare :Isac Hedén; Karl-Heinz Fieseler; Wojciech Chacholski; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Algebra; geometry and mathematical analysis; Algebra; geometri och analys; Mathematics; Matematik;

   Sammanfattning : .... LÄS MER

3. 2. Ga-actions on Complex Affine Threefolds

   Författare :Isac Hedén; Heinz Fieseler; Lucy Moser-Jauslin; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Complex affine varieties; algebraic group actions of C^ and C^*; locally nilpotent derivations; graded algebras; principal bundles; Russell s hypersurface;

   Sammanfattning : This  thesis  consists  of two papers  and  a summary.  The  papers  both  deal with  affine algebraic complex  varieties,  and  in particular such  varieties  in dimension  three  that have a non-trivial action  of one of the  one-dimensional  algebraic  groups  Ga   :=  (C, +) and  Gm  :=  (C*, ·). LÄS MER