#18409: Dynatomic polynomial bug for fractional coefficients
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Reporter: gjorgenson | Owner: bhutz
Type: defect | Status: needs_work
Priority: minor | Milestone: sage-6.7
Component: algebraic | Resolution:
geometry | Merged in:
Keywords: | Reviewers:
Authors: Ben Hutz | Work issues:
Report Upstream: N/A | Commit:
Branch: | e777520afbd36613e52df9ed04144efc5cb4d0c6
u/bhutz/ticket/18409 | Stopgaps:
Dependencies: |
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Comment (by bhutz):
Thanks for the comments Vincent. I can certainly make those code
improvements.
For the examples, I wasn't sure about adding them. What is changing here
is the parent of the result, not the actual result. In particular, the new
version is converting some of the Symoblic Ring cases back to a
polynomial. So a new example would need to test the parent of the result,
which seemed a little odd.
Maxima was originally involved because there were cases where the quo_rem
function was not doing the division; I believe cases like the base ring is
a function field or polynomial ring. Maxima is able to do this division.
I'll run some more tests and see if the pass to Maxima is still needed, or
if we can avoid that situation completely.
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Ticket URL: <http://trac.sagemath.org/ticket/18409#comment:9>
Sage <http://www.sagemath.org>
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