inspite of the book being coproductive ************************************************************ Until August 10, 1998, I am on leave from UNC and am at the University of Pennsylvania Jim Stasheff jds@math.upenn.edu 146 Woodland Dr Lansdale PA 19446 (215)822-6707 Jim Stasheff jds@math.unc.edu Math-UNC (919)-962-9607 Chapel Hill NC FAX:(919)-962-2568 27599-3250 On Mon, 6 Jul 1998, Ronnie Brown wrote:

Re Hilton and Wylie: it really was a landmark in its time, quite readable. But the co- contra- change, together with contravariant functors written on the right, became contrafusing.

Ronnie