Here is a source that may be of help for some of you:
I have put there lecture notes taken in 2001;
only lectures relevant to the part I exam
are selected; some typos are corrected.
Alternatively, look into the web page of a
similar course I taught in 2001.
Part II (Spring 2004):
A file [defs.tex] that you need if you would like
to compile .tex sources.
Karmarkar's algorithm for linear programming: