Mon Feb 7 2000

 * go over homework
 * survey of readings (Dogschool Housekeeping chapter, Joyner's notes chap 0,1)
 * brief discussion of logic and sets
 * lemma, theorem, corollary
 * discuss "equivalence relation"
 * defined "conjugate" - see assignment.

-- didn't do this stuff yet ----------------

 * discuss permuations: disjoint cycles, cycle notation, why even/odd?

 * right-left vs left-right ordering of a*b*c 
   ("recipe" vs "function composition")

 * continuous groups: manifolds, lie groups, transformations of space-time
 * homomorphism
 * "representation" of a group: homomorphic matrix group
   (1) rotations in 2D, 3D
   (2) boosts in 2D, 3D
   (3) Lorentz group (3 rotations + 3 boosts)
   (4) Poincare group (6 lorentz + 4 translations)