#18940: Polynomials ignore the step argument in __getitem__
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Reporter: pbruin | Owner:
Type: defect | Status: needs_info
Priority: major | Milestone: sage-6.10
Component: algebra | Resolution:
Keywords: | Merged in:
Authors: Peter Bruin | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/pbruin/18940-getitem_step | 1c56779b3140d12fbe5d0973cdcad0ac9dbb8054
Dependencies: #19409 | Stopgaps:
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Comment (by jdemeyer):
Replying to [comment:29 pbruin]:
> Similarly, in PARI, my experience is that `Vecrev` (which does the
equivalent of `list` above) is more useful than `Vec` to extract the list
of coefficients of a polynomial.
I think you are totally misunderstanding me. This is not at all about in
''which order'' the monomials are extracted. Obviously, PARI's `Vecrev()`
is the right thing, I'm not arguing against that.
It's about
{{{
9*x^9 + 8*x^8 + 7*x^7 + 6*x^6 + 5*x^5 + 4*x^4 + 3*x^3 + 2*x^2
}}}
versus
{{{
9*x^7 + 8*x^6 + 7*x^5 + 6*x^4 + 5*x^3 + 4*x^2 + 3*x + 2
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/18940#comment:34>
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