At 06:34 PM 5/30/03 +0100, Jim White wrote:

It's standard practice in mathematical libraries that when a single-valued result is required, the "principal value" is returned, which in this case is set to k=0.

I assume this means that the MandelbrotMix4 images are in fact 'correct' as they now stand, but if the 'maybe bug' were fixed, the formula would draw images that are "more correct" (whatever that means). Jim M.