Fractals/Iterations in the complex plane/Parameter plane
- 1 Parts of parameter plane
- 2 How to choose a point from parameter plane ?
- 3 How to move on parameter plane ?
- 4 Plane types
- 5 point c description
- 6 Point Types
- 7 Algorithms
- 8 See also
- 9 Rerferences
Parts of parameter plane
How to choose a point from parameter plane ?
- clicking on parameter points and see what you have ( random choose)
- computing a point with known properties. For example (parabolic point ) choose hyperbolic component ( period , number) and internal angle (= rotation number) then compute c parameter.
How to move on parameter plane ?
- along radial curves :
- external rays
- parabolic points
- internal rays
- along circular curves :
- boundaries of hyperbolic components
- internal circular curves
The phase space of a quadratic map is called its parameter plane. Here:
- is constant
- is variable
There is no dynamics here. It is only a set of parameter values. There are no orbits on the parameter plane.
The parameter plane consists of :
- The Mandelbrot set
- The bifurcation locus = boundary of Mandelbrot set
- Bounded hyperbolic components of the Mandelbrot set = interior of Mandelbrot set 
- plain ( c-plane )
- inverted c-plane = 1/c plane
- exponential plane ( map) 
- unrolled plain (flatten' the cardiod = unroll )  = "A region along the cardioid is continuously blown up and stretched out, so that the respective segment of the cardioid becomes a line segment. .." ( Figure 4.22 on pages 204-205 of The Science Of Fractal Images)
- transformations 
- Mandelbrot set projected on a shrinking Riemann-sphere by Arneauxtje
- Mandelbrot's Elephant Valley (Short Version) Timothy Chase
- Mandelbrot Buds and Branches Timothy Chase Timothy Chase
- Mandelbrot Zoom on a Sphere video by craftvid : "This a 300-trillion time zoom-in on the Mandelbrot set. The images are set on a Spherical "mobius" projection, meant to be wrapped onto a spherical surface. The image zooms in on the front center of the Sphere, while fading away on the back of the sphere."
point c description
- c value
- (external or internal ) angle
- ( external or internal) radius
point =pixel of parameter plane = c parameter
Criteria for classification of parameter plane points :
- arithmetic properties of internal angle (rotational number) or external angle
- in case of exterior point:
- type of angle : rational, irrational, ....
- preperiod and period of angle under doubling map
- in case of boundary point :
- preperiod and period of external angle under doubling map
- preperiod and period of internal angle under doubling map
- in case of exterior point:
- set properties ( relation with the Mandelbrot set and wakes)
- inside wake, subwake
- outside all the wakes, belonging to a parameter ray landing at a Siegel or Cremer parameter,
- geometric properities
- number of of external rays that land on the boundary point : tips ( 1 ray), biaccesible, triaccesible, ....
- position of critical point with relation to the Julia set
There is no complete classification. The "unclassifed" parameters are uncountably infinite, as are the associated angles.
- exterior of Mandelbrot set
- Mandelbrot set
- boundary of Mandelbrot set
- interior of Mandelbrot set
- other internal points ( points of internal rays )
partial classification of boundary points
- Boundaries of primitive and satellite hyperbolic components:
- Boundary of M without boundaries of hyperbolic components:
- non hyperbolic components ( we believe they do not exist but we cannot prove it ) Boundaries of non-hyperbolic components would be infinitely renormalizable as well.
Here "other" has not a complete description. The polynomial may have a locally connected Julia set or not, the critcal point may be rcurrent or not, the number of branches at branch points may be bounded or not ...
- Escape time
- Discrete Velocity of non-attracting Basins and Petals by Chris King
- atom domains
- average distance between random points
- combinatorial : tuning
- Visual Guide To Patterns In The Mandelbrot Set by Miqel
- fractalforums : deep-zooming-to-interesting-areas
- Lasse Rempe, Dierk Schleicher : Bifurcation Loci of Exponential Maps and Quadratic Polynomials: Local Connectivity, Triviality of Fibers, and Density of Hyperbolicity
- Alternate Parameter Planes by David E. Joyce
- exponentialmap by Robert Munafo
- mu-ency : exponential map by R Munafo
- Exponential mapping and OpenMP by Claude Heiland-Allen
- Linas Vepstas : Self Similar?
- the flattened cardioid of a Mandelbrot by Tom Rathborne
- Stretching cusps by Claude Heiland-Allen
- Twisted Mandelbrot Sets by Eric C. Hill
- stackexchange : classification-of-points-in-the-mandelbrot-set
- fractalforums : tricky-mandelbrot-problem