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// Compute the coefficients of the Jungreis function, i.e., the | |
// Fourier coefficients of the harmonic parametrization of the | |
// boundary of the Mandelbrot set, using the formulae given in | |
// following paper: John H. Ewing & Glenn Schober, "The area of the | |
// Mandelbrot set", Numer. Math. 61 (1992) 59-72 (esp. formulae (7) | |
// and (9)). (Note that their numerical values in table 1 give the | |
// coefficients of the inverse series.) | |
// The coefficients betatab[m+1][0] are the b_m such that | |
// z + sum(b_m*z^-m) defines a biholomorphic bijection from the |
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# Square of eccentricity (but not that of the drawn ellipse): | |
modparm = 3/4 | |
# The size of the drawn ellipse (semimajor and semiminor) is computed | |
# below. | |
### Mapping the inside of the disk to the inside of the ellipse: | |
prescale = N(modparm^(-1/4)) | |
postscale = N(pi/(2*elliptic_kc(modparm))) |