Dear Categorists, I am organizing a Workshop on Opetopes, Opetopic Sets, and Opetopic Categories at the University of Warsaw. It will be held in two parts: March 8-9 and March 15-16, 2013. You can find more information on the page http://mimuw.edu.pl/~zawado/Conferences/Opetopes2013.html If you are interested to come, please let me know. Best regards, Marek Zawadowski [For admin and other information see: http://www.mta.ca/~cat-dist/ ]