categories: TTT now available free

[Michael Barr <barr@barrs.org>]

Toposes, Triples and Theories, by Michael Barr and Charles Wells, was
published in 1984 by Springer-Verlag as Grundlehren der mathematischen
Wissenschaften 278. That version is now out of print.  We have retrieved
the copyright and have placed a corrected and somewhat expanded version of
the book on line, by ftp at

ftp.math.mcgill.ca

in the files

pub/barr/tttdvi.zip
pub/barr/tttpdf.zip
pub/barr/tttps.zip

and by browser from the location

http://www.cwru.edu/artsci/math/wells/pub/ttt.html

--Michael Barr and Charles Wells