The ABC conjecture [*La conjecture ABC*].

The horizontal and vertical axes display respectively the integer numbers from 1 to N.
Each disk display a couple of coprime numbers A (X axis) and B (Y axis):
GCD(A,B)=1

The number C is the sum of A and B:
C = A+B

The function Radical(N) gives the product of the prime factors (with an exponent equals to 1) of N.
For example:
N = 1960 = 2^{3}x5^{1}x7^{2}

Radical(1960) = 2^{1}x5^{1}x7^{1} = 2x5x7 = 70

Then the following function is computed:
log(C)
k(A,B,C) = ---------------------
log(Radical(A.B.C))

**The ABC conjecture** states that k(A,B,C) is less than a certain constant (unknown, but greater than 1 and
hopefully lesser than 2...) whatever the values of A and B.

The surface and the luminance of each disk are proportional to k(A,B,C).

For this picture, the numbers A and B belong to [1,N=20]
giving birth to the following values:
min(k(A,B,C))=0.38418327328527
max(k(A,B,C))=1.22629438553090

See some tridimensional visualizations:

See some related pictures (including this one):

(CMAP28 WWW site: this page was created on 09/21/2012 and last updated on 09/06/2022 10:57:52 -CEST-)

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