#7580: bugs in infinite polynomial ring
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Reporter: was | Owner: SimonKing
Type: defect | Status: new
Priority: major | Milestone: sage-4.3
Component: algebra | Keywords:
Work_issues: | Author:
Upstream: N/A | Reviewer:
Merged: |
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Comment(by SimonKing):
I am now going through the bugs that you reported:
{{{
sage: X.<x,y> = InfinitePolynomialRing(QQ)
sage: x[2^31]
Traceback (most recent
...
OverflowError: range() result has too many items
sage: x[100]
TypeError: ...
}}}
I found the reason: There is one attribute of {{{X}}} that is changed even
when {{{x[2^31]}}} fails. When subsequently calling {{{x[100]}}}, that
attribute makes the sytem believe that the underlying polyomial ring is
big enough to fit {{{x100}}} --- which is not the case.
My plan is to go through the whole code before posting a patch. I hope
that's fine.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7580#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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