Dear All, I am discussing Conceptual Mathematics (textbook of Lawvere & Schanuel) in a manner accessible to high school students (i.e. doing the exercises and trying to understand definitions) at http://conceptualmathematics.wordpress.com/ I'd appreciate very much if you, your time permitting, could provide any corrections and clarifications that you may have. Thanking you, Yours sincerely, posina [For admin and other information see: http://www.mta.ca/~cat-dist/ ]