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GaussInt

 GIphi
 number of Gaussian integers in a reduced system modulo n

 Calling Sequence GIphi(n)

Parameters

 n - Gaussian integer

Description

 • The function GIphi returns the number of Gaussian integers in a reduced system modulo n.
 • A system of Gaussian integers incongruent each to each with respect to a given modulus n is called a reduced system of incongruent numbers modulo n.

Examples

 > $\mathrm{with}\left(\mathrm{GaussInt}\right):$
 > $\mathrm{GIphi}\left(-201-43I\right)$
 ${15600}$ (1)