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- Path: sparky!uunet!ogicse!cs.uoregon.edu!nntp.uoregon.edu!cie.uoregon.edu!scavo
- From: scavo@cie.uoregon.edu (Tom Scavo)
- Newsgroups: sci.fractals
- Subject: Re: Mandelbrot Set
- Message-ID: <1992Oct14.215456.24685@nntp.uoregon.edu>
- Date: 14 Oct 92 21:54:56 GMT
- Article-I.D.: nntp.1992Oct14.215456.24685
- References: <1992Oct13.151335.24563@sol.UVic.CA> <1992Oct13.195243.986@nntp.uoregon.edu> <5f1zj-c@rpi.edu>
- Sender: news@nntp.uoregon.edu
- Organization: University of Oregon Campus Information Exchange
- Lines: 32
-
- In article <5f1zj-c@rpi.edu> fokp@rpi.edu writes:
- >The equation is:
- >Zn+1=Z^2+C where
- >C is a complex number namely x+yi.
- >The idea is to make a grid on the computer screen with the boundary
- >of -2 to 2 for the x axis and -2 to 2 for the y axis. Then you start
- >calculating the set by putting every coordinate in the constant C and
- >Z. You use the point as an initial value as well as a constant.
-
- When calculating the Mandelbrot set, compute the orbit of 0 (the
- critical point) for each value of c . Also, the M set lives in
- parameter space with Re(c) along the horizontal axis and Im(c)
- along the vertical axis. The Julia set, on the other hand, is in
- the complex plane with Re(z) and Im(z) along the horizontal
- and vertical axes, respectively. The parameter c is fixed in
- the case of Julia set.
-
- >It is very similar to the Julia Set. In fact, Mandelbrot claimed that
- >the Mandelbrot Set have contain every Julia Set.
-
- For certain values of c , called _Misiurewicz points_, there is a
- structural relationship between the M set and the corresponding
- Julia set. See Experiment 17.7 in Devaney's _A First Course in
- Chaotic Dynamical Systems_ (Addison-Wesley, 1992) or section 7 in
- Bodil Branner's excellent paper in _Chaos and Fractals: The Math-
- ematics Behind the Computer Graphics_ (AMS, 1989). I believe the
- definitive work on this was done by Tan Lei, but I don't have a
- reference.
-
- --
- Tom Scavo
- scavo@cie.uoregon.edu
-