The following is a high-level overview of the things covered in discussion 
on October 13, 2008.<br>

<p><b>Administration -</b> Office hours today, homework 1 graded (hand back tomorrow?), homework 2 posted, midterm next thursday.</p>
<p><b>Homework Info -</b> Homework 1 graded -- please read the instruction carefully and please hand in on time.  If you come to office hours you will almost for sure do better on the homework!  Avg. was about 72%.  Homework 2 posted -- 6 problems, mostly on regular expressions and non-regular languages (will be covered this week).</p>
<p><b>Common Homework 1 errors -</b>  A subset of a regular language is not necessarily a regular language!  Pairs vs. sets vs. strings.</p>
<p><b>Regular Expression Problems -</b> Problems like sipser 1.12, 1.18, 1.19, 1.20.</p>