For a list of properties which
would be helpful for the homework due March 4, 2004 click here. At this
point in the class you should be able to prove anything listed on this
sheet. You may need the information from class on March 2 to help.
This material is based upon work supported by the National Science
Foundation under grant No. 0093494. Any opinions, findings and
conclusions or recommendations expressed in this material are those of
the author(s) and do not necessarily reflect the views of the National
Science Foundation.