I have a (rather specific) question about https://blog.wolfram.com/2019/03/07/shattering-the-plane-with-twelve-new-sub... In the table "heegnergrid" you give polynomials with one root r such that r^24 - 24 (how does one come up with that?) lies very close to the j-function value. How did you find them? Also, are these all Pisot polynomials? (I just tried the last: abs(polroots(x^3-6*x^2+4*x-2)) == [5.31862, 0.6132, 0.6132]~ ) Best regards, jj * Ed Pegg Jr <ed@mathpuzzle.com> [Apr 17. 2019 13:51]:

I've recently found a lot of new substitution tilings. They are listed in the program at http://demonstrations.wolfram.com/SubstitutionTilings/

-Ed Pegg Jr _______________________________________________ math-fun mailing list math-fun@mailman.xmission.com https://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun