• Spectrum preserving linear mappings between Banach algebras 

      Weigt, Martin (Stellenbosch : Stellenbosch University, 2003-04)
      ENGLISH ABSTRACT: Let A and B be unital complex Banach algebras with identities 1 and I' respectively. A linear map T : A -+ B is invertibility preserving if Tx is invertible in B for every invertible x E A. We say that ...
    • Spherical parameterisation methods for 3D surfaces 

      Brink, Willie (Stellenbosch : University of Stellenbosch, 2005-12)
      The surface of a 3D model may be digitally represented as a collection of flat polygons in R3. The collection is known as a polygonal mesh. This representation method has become standard in computer graphics.