11 Dec
2010
11 Dec
'10
7:35 p.m.
(Simple stuff I couldn't visualize w/o plotting.) Rotate a unit cube about a major diagonal. Its intersection with a plane containing that diagonal varies (with period pi/3) between a rhombus (of side rt(5)/2) and a 1 by rt2 rectangle. --rwg Who might be able to tell me that "my" Fourier expansion of Jacobi am is a) Centuries old, or b) Just what we've been looking for. ?