In a description that's hard to rectify with his formula, on Sun, 18 Apr 2004, Jim Muth wrote: "Take (1/Z), mix it with 1/2 as much Z^(-2), and add (1/C)." MuthMath { ; Assuming that "mix" means "add", which it doesn't. z=fn1(pixel), c=fn2(pixel): z=1/z +z^(-2) +c, |z| <= real(P1) } default { ; Triangularity in the middle of a circle, ; from the year of our lord, Two Thousand and Four, ; on April the Eighteenth, which is just another ; reminder that sometimes traditions stop ; making sense (sorting) when they change. reset=2003 type=formula formulafile=20040418.par formulaname=MuthMath function=ident/ident params=8/0 inside=0 outside=atan colors=@altern.map }