Similar things for n=11 and n=13: http://www.buddenbooks.com/jb/pack/circle/n11.htm http://www.buddenbooks.com/jb/pack/circle/n13.htm On Fri, Jan 27, 2017 at 4:16 PM, Bill Gosper <billgosper@gmail.com> wrote:

ccc11.gif <http://www2.stetson.edu/~efriedma/cirincir/ccc11.gif> seems to assert that two unit disks precisely fit within a circle of nine. After much bovoparturition, Mathematica agrees! Can anyone provide some insight? --rwg _______________________________________________ math-fun mailing list math-fun@mailman.xmission.com https://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun