Case Western Reserve University main page
CHARLES WELLS

Professor Emeritus
of Mathematics charles (at) abstractmath.org 
Since the midseventies, my research interests have been in category theory and its connections with theoretical computer science, in mathematical discourse, and in the problems of teaching and understanding mathematics.
· Abstract Math, a website based on the Handbook for anyone beginning to learn about some aspect of abstract math.
· Gyre & Gimble, a blog about math and language