Hola, Fellow Phractophiles, There was a brief murmur of interest in triternions when Tim Wegner broached the subject on 12/9/02, which was about as much as the concept, then embryonic, warranted at the time. Its evolved some since then, and the Tsets now offer more opportunity for exploration; so I thought I put the latest formulas out there and see what happens next. TMan { c1=real(pixel),c2=imag(pixel),c3=p1 z1=z2=z3=0: t1=z1*z1+2*z2*z3 t2=z3*z3+2*z1*z2 t3=z2*z2+2*z3*z1 z1=t1+c1,z2=t2-c2*c2,z3=t3+c3 z=z1+z2+z3 |z| < 8 } There is, I believe, a rather nice rendition of this set on page 12 of http://fibonacci-arrays.com/Triternions.pdf The formula is a 2-D slice (in the X,Y plane) of a 3-D object at whatever value is chosen for p1. In appendix #2 of the paper, some variations are explored. Ive also noticed that sign changes may have nice effects. E.g., z1=-t1+c1,z2=t2+c2*c2,z3=t3+c3, t3=-z2*z2+2*z3*z1, and so forth. It seems a bit challenging to define a Julia set version of the TMan; Maybe someone can see a way to go with that. I'm looking forward, eventually, to seeing these objects in full-on 3-D. Ciao, Russell Russ Walsmith russw@lycos.com _____________________________________________________________ Get 25MB, POP3, Spam Filtering with LYCOS MAIL PLUS for $19.95/year. http://login.mail.lycos.com/brandPage.shtml?pageId=plus&ref=lmtplus