Apparently not a T-shirt but still about math in a plane (probably not a Euclidean one)= Email from Warren Smith 8 May 2016 with content on: Professor's airplane math leads to flight delay AP 6:01 p.m. EDT May 7, 2016 Cheers Seb On Sat 24 Mar 2018 at 14:50, Bill Gosper <billgosper@gmail.com> wrote:

over a math T-shirt they didn't understand? --rwg _______________________________________________ math-fun mailing list math-fun@mailman.xmission.com https://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun