#9400: modify the NumberField constructor to pass in optional integer B such
that
all the internal pari routines will replace the discriminant by its gcd
with B, making some things massively faster.
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Reporter: was | Owner: davidloeffler
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.5.3
Component: number fields | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by was):
> Note how the integer is printed first in the first case but last in the
second case (and personally I find it clearer when the integer is put
first). Maybe the sorting and uniqueing should be done in the
NumberFieldIdeal constructor instead of when the ideal is printed?
Would that make any difference? The difference above is that in one case
the number field has a very small discriminant (-1323), and in the other
it doesn't (-2700540027). When the discriminant is small, then reduced
generators are used for printing. A solution could be to apply the
sorting and "uniquing" in both cases before printing -- right now it is
only applied in the case of large discriminant.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9400#comment:12>
Sage <http://www.sagemath.org>
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