#16964: Speed up comparisons in QQbar
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Reporter: gagern | Owner:
Type: defect | Status: positive_review
Priority: critical | Milestone: sage-6.5
Component: number fields | Resolution:
Keywords: variety qqbar cmp | Merged in:
singular | Reviewers: Vincent Delecroix
Authors: Martin von Gagern | Work issues:
Report Upstream: N/A | Commit:
Branch: | 3f4afef46ab6a042cb2678394031cb5c26d89b1a
u/vdelecroix/16964 | Stopgaps:
Dependencies: |
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Comment (by gagern):
Replying to [comment:31 gagern]:
> Why do arithmetic operators for algebraic numbers compute some costly
unions of number fields (which I believe is what they are doing), instead
of using resultants to describe their results? And should we start some
major rewrite effort to change that, i.e. to base most if not all
arithmetic operations on resultants?
>
> I get the impression that this might trigger some major work. I hope
that the reviewed changes can land as they are, while we investigate (in
some other branch) how to tackle this more generic approach.
Just created #17886 about using resultants to speed up most qqbar
operations.
--
Ticket URL: <http://trac.sagemath.org/ticket/16964#comment:32>
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