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D.15.11.3 matrixLog

Procedure from library orbitparam.lib (see orbitparam_lib).

Usage:
matrixLog(A); A matrix.

Assume:
A-E is a nilpotent n x n matrix.
If the characteristic p of the ground field is positive, then n has to be smaller than p.

Return:
matrix, log(A)

Theory:
We compute the power series, which terminates since A-E is nilpotent.

Example:
 


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