Jim Muth wrote: The plethora of triternion formulas from various sources continues to increase, though I have yet to see one that draws a perfect M-set as its 0,0 default, as intuition suggests it should. Since posting variation number one of the original formula, I have made four more variations. Today's variation, number five, draws a reasonably perfect default M-set, yet still creates the criss-crossing elements that make these formulae so interesting. (end quotation) How about this: T_Nearly_Mandel { c1=Pixel,c2=Pixel,c3=0 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,z3=t3+c3 z=z1+z2+z3 |z|<64} AND THIS: T_Super_Mandel { c1=Pixel,c2=Pixel,c3=Pixel 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,z3=t3+c3 z=z1+z2+z3 |z|<64}