Present  Editor of Word Ways, Butler University  


Present  Professor Emeritus of Mathematics, Butler University ‐ Department of Mathematics & Actuarial Sciences  

Disciplines
Gathering For Gardner (33)
Gathering for Gardner inspires fun and wonder for recreational mathematics, magic, puzzles, and art. Farrell has helped to organize the biannual Gathering for Gardner conferences, which started in 1993 as an invitationonly event for people connected with Martin Gardner. Papers and solutions produced for the Gathering for Gardner Gift Exchange have been published in Martin Gardner Tribute Books, published by AK Peters (now CRC Press).