5.2, due on 2/16

1. Theorem 5.7 seems strange to me.  I followed the proof I guess I just don't understand the importance of it.

2. Theorem 5.8 was a cop out.  It is the same thing as 5.7.  Theorem 5.9 was pretty interesting.  This section was pretty weak.  It was short and not very interesting.  At least it was easy to follow.