#13659: matrix_mod_pn incorrect for extension fields of padics
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Reporter: saraedum | Owner: roed
Type: defect | Status: new
Priority: minor | Milestone: sage-5.5
Component: padics | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Julian Rueth | Merged in:
Dependencies: #13651 | Stopgaps:
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Description changed by saraedum:
Old description:
> {{{matrix_mod_pn()}}} for elements in Eisenstein extensions of {{{Zp}}}
> suffers from the same inaccuracy as the one described in #13651.
> {{{
> sage: R=Zp(3,3)
> sage: S.<a>=R[]
> sage: L.<a>=R.extension(a^2-3)
> sage: L(3).matrix_mod_pn()
> [57 0]
> [ 0 57]
> }}}
>
> The attached patch fixes this.
New description:
{{{matrix_mod_pn()}}} for elements in Eisenstein extensions of {{{Zp}}}
suffers from the same inaccuracy problem as the one described in #13651.
{{{
sage: R=Zp(3,3)
sage: S.<a>=R[]
sage: L.<a>=R.extension(a^2-3)
sage: L(3).matrix_mod_pn()
[57 0]
[ 0 57]
}}}
The attached patch fixes this.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13659#comment:1>
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