|  | 
  
 
 
 
   
    |  | 
         
          |  |  |  |  |   
          |  |  |  |   
          |  |  Spheres
 
  |  |  
          |  |  |  |   
          |  |  
 | Organization: | Humboldt-University Berlin | 
  |  |  
          |  |  |  |   
          |  |  0210-092
 
  |  |  
          |  |  |  |   
          |  |  2000-12-12
 
  |  |  
          |  |  |  |   
          |  |  The packages contain basic functions and modules for working in pseudo-euclidean vector spaces, and in the spaces of spheres, circles, and point pairs (= 0-spheres) in Moebius and Euclidean geometries. The notebooks treat examples and complete this material. Conformal invariants classifying pairs of subspheres, geodesics of the sphere space, the circle space, and the 0-sphere space are considered. Many constructs are valid for any finite dimension and any index of the scalar product. The 3-dimensional case is emphasized. 3D-graphics are animated with the OpenGL-Viewer of MathGL3d.
 
  |  |  
          |  |  |  |   
          |  |  
  |  |  
          |  |  |  |   
          |  |  spheres, circles, throws, pseudo-euclidean geometry, Moebius geometry, conformal invariants, stationary angles, orthogonalization, vector objects, matrix objects, spiral surfaces, inversions, tubes, Killing forms, stereographical projections, MathGL3d
 
  |  |  
          |  |  |  |   
          |  |  
 |  | spheres.txt (13.8 KB) - ASCII text file |  |  | OpenGLViewer.m (1.5 KB) - Mathematica package |  |  | eusphere.nb (157.8 KB) - Mathematica notebook |  |  | euvec.m (14.1 KB) - Mathematica package |  |  | init.m (1.5 KB) - Mathematica package, master package |  |  | liealg.m (13.7 KB) - Mathematica package |  |  | mcirc.m (15.4 KB) - Mathematica package |  |  | mcircles.nb (269.8 KB) - Mathematica notebook |  |  | mspher.m (8 KB) - Mathematica package |  |  | mspheres.nb (131.8 KB) - Mathematica notebook |  |  | pairs.nb (171.9 KB) - Mathematica notebook |  |  | pseuklid.nb (82.2 KB) - Mathematica notebook |  |  | pseuvec.m (8.6 KB) - Mathematica package |  |  | sphs4.tgz (197.1 KB) - gzipped tar file of all items |  |  | sphs4.zip (202 KB) - zipped file of all items |  |  | spiralsf.m (2.2 KB) - Mathematica package | 
  |  |  |  |   
    |  |  |  |  |  |  |  |  |  |  |  | 
 |