pseudo-inverse of a Zmod(2) matrix

asked 2016-02-27 00:05:36 +0100

doug719 gravatar image

I have a 25 x 25 Zmod(2) matrix that is singular, and I would like to find the pseudo-inverse. I haven't found anything yet that will work. Suggestions?

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For matrices over C, wikipedia page for sagemath says

import numpy
C = matrix([[1 , 1], [2 , 2]])
matrix(numpy.linalg.pinv(C)) # returns
   [0.1 0.2]
   [0.1 0.2]

but this does not work over finite fields, by lack of a "conjugate" method.

FrédéricC gravatar imageFrédéricC ( 2016-02-27 13:52:09 +0100 )edit
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