#6942: jordan_form with transformation=true returns non-invertible
transformation
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Reporter: syazdani | Owner: tbd
Type: defect | Status: new
Priority: critical | Milestone:
Component: algebra | Keywords: jordan_form, transformation
Reviewer: | Author:
Merged: |
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The following code returns an incorrect result:
{{{
mm=Matrix(GF(2),[[1,0,1,0,0,0,1],[1,0,0,1,1,1,0],[1,1,0,1,1,1,1],[1,1,1,0,1,1,1],[1,1,1,0,0,1,0],[1,1,1,0,1,0,0],[1,1,1,1,1,1,0]])
_,S = mm.jordan_form(transformation=True)
S.rank()
}}}
S should be invertible, so the rank should be 7, but the rank of the above
is 5.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6942>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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