Re: [math-fun] integers that are either square or thrice a square, where do such beasts hide?

Thanks for the explanations — how cool! —Dan -----

From memory, as the drawing is still in some box (I moved):

I find squares on the x-axis and the 6 equivalent axes (repeatedly multiply by w_6). I find 3 * squares on the axis along w_{12} and the 6 equivalent axes (repeatedly multiply by w_6). Best regards, jj * Adam P. Goucher <apgoucher@gmx.com> [Aug 30. 2018 17:14]:

I'm using it to mean "arg(z) is a rational multiple of 2 pi", or equivalently "some power of z is real" or "z / abs(z) is a root of unity".