       
   to find the other packages : http://www.simtel.net/
              The news groups : http://groups.yahoo.com/group/mathc/
      
 
                   Verify with numeric applications :
                   --------------------------------

   mtrxab.zip :  * Properties of Euclidian inner product in R**n.
                 * Properties of length   in R**n.
                 * Properties of distance in R**n.
                 * u.v = 1/4 ||u+v||**2  -  1/4 ||u-v||**2. 
                 * Cauchy-Schwarz inequality in R**n.
                 * If u.v =0 :  ||u+v||**2 = ||u||**2 + ||v||**2.