moved all e.g.s to e.g.,
i.e. to i.e.,
added equation numbering to ch 2
split intro into ch intro and section intro
revised cosi section
spell checked cosi
made all \cites have a space before them
cafca section revised and spell checked
vision section revised and spell checked
other sim section done and sepll checked
revised and spell checked lp overview section
fixed typo in table
looked over overview section one more time
revised simplex section
reviewed the xportation section and spell checked
finished all lp sections and spell checked
finished litreview revisions. thanks to moving, it took an extra two days. sigh