Old Business:

   RF group, Jim's analysis

   Rubik's Algorithm:  class discussion.  PRELIM - DUE NEXT WEEK

   Projects: status report (go around class)

 New Business:

   "symmetry" of a geometric pattern as transformation group
   
   Read "Pattern at Darmouth" math lessons, 1-4.

   *  E2 = Euclidean group, 2D  = all isometries (distance preserving transformations)
   *  symmetric patterns can be classified by _subgroups_ of E2.
   *    smooth rotational 
   *    N-gon rotation
   *    translation in given direction
   *    finite translation (integers) 
   *    reflections 
   *    combinations of those above

   *  "group acting on a set"
   *  "fundamental region"

   *   Kali program


 Homework:
   Read "Tilings and tesselations"
   Play with Kali
   Work on projects
   Finish up Rubik algorithm