HW 3.  Due Wed. Oct 16, in class
<br>

Levi: 7, 8 (*), 9, 17 (*)

<br>  Pillars:  2.5.4, 2.7.4.  

<br><br>: `Levi' refers to the problems at the end of the Reader.
The Reader is available on the course web site. <br>
A star  (`(*)' ) by a problem means that problem is especially 
important and likely to be graded.