Charles Wells

My wife Jane Ely Wells and I live in Saint Paul, MN. We have two sons Matt and Peter. Matt lives in Saint Paul with his wife Lara Andersen and our grandsons Charlie and Andy.  Peter lives in Cleveland, Ohio.

Email:  Charles (at), Jane (at)

This list shows some of the things I have produced or been involved with. More math stuff is listed on my professional website.

     The website, for people learning post-calculus math.

     Gyre & Gimble, a blog about math and language.

     Astounding Math Stories

     Handbook of Mathematical Discourse.

     Category Theory for Computing Science.

     Cryptic crossword puzzles

     Sacred Harp singing.


Miscellaneous articles

     Old Barrows


     Boundaries with Bumps