#20744: Polynomial encoder for GRS codes fails if variable name is not x
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Reporter: dlucas | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-7.3
Component: coding theory | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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The following:
{{{
sage: F = GF(11)
sage: Fy.<y> = F[]
sage: n, k = 10 , 5
sage: C = codes.GeneralizedReedSolomonCode(F.list()[:n], k)
sage: E = C.encoder("EvaluationPolynomial")
sage: p = y^2 + 3*y + 10
sage: c = E.encode(p);
<BOOM>
}}}
fails because the polynomial to encode has to be in `'x'` with the actual
implementation.
This ticket fixes it, by allowing the user to specify a variable name when
creating the encoder.
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Ticket URL: <http://trac.sagemath.org/ticket/20744>
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