deletions | additions       diff --git a/lectures.tex b/lectures.tex  index d357a7d..76e4b1c 100644  --- a/lectures.tex  +++ b/lectures.tex 
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  As can be seen in Fig.~\ref{fig:sample-handout-page}, exercises are incorporated into the body of the notes. Typically we assign a few exercises prior to the start of lecture as guides to reading the notes. We then assign longer, more involved problems as homework following the lecture. Solutions, which are written in the same format as the lecture notes, are distributed when the marked assignments are returned. The class discusses the solutions in lecture, with ample opportunity for students to ask questions.  By As of  the midpoint of the Spring 2015 semester,about  40 pages of notes in this format had have  been written and distributed. These notes include 30 exercises developed specifically  for this course.