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From: mccaugh@s.cs.uiuc.edu
Newsgroups: comp.graphics
Subject: How To Generate MandelBrot
Message-ID: <207400013@s.cs.uiuc.edu>
Date: 15 Aug 89 23:53:00 GMT
Lines: 12
Nf-ID: #N:s.cs.uiuc.edu:207400013:000:525
Nf-From: s.cs.uiuc.edu!mccaugh    Aug 15 18:53:00 1989


                                                      2
 Just a quick request about the recurrence: f(z)  =  z   +  c, which I have
 often seen cited as "classic Mandelbrot": what are the:

          1) starting values of z  and
          2) constant value for c

 usually used? I have heard that the starting value for z must be near a fixed
 point  of the recurrence, which of course is (1 +/- Sqrt(1 - 4*c))/2, and for 
 z to be complex requires that (1 - 4*c) < 0, or: c > 1/4. But should c itself 
 be real or complex?