This directory contains a free www-book,
LECTURE NOTES ON PDE'S: SEPARATION OF VARIABLES AND ORTHOGONALITY
by Richard H. Rand
   Dept.of Theoretical & Applied Mechanics
   Cornell University
   Ithaca NY 14853
   rhr2@cornell.edu
   http://tam.cornell.edu/Rand.html

Please reference these notes as follows:

"Lecture Notes on PDE's, version ??", 
R.H.Rand, 200?,
available online at http://audiophile.tam.cornell.edu/randdocs/

Features of various versions:

version 11  (2006) was used as a text in TAM 310 Spring 2006.
version 12  (2006) was used as a text in TAM 611 Spring 2006.
version 13  (2006) corrects a misprint in version 12.
version 14  (2008) corrects website address, text in TAM 310 Spring 2008.
version 15  (2008) corrects a misprint in version 14.
version 16  (2009) corrects various misprints - thanks to Steve Strogatz
version 17  (2015) same as version 16 with a new title page
version 18  (2016) figures improved