Opened 10 years ago
Closed 9 years ago
#13587 closed defect (fixed)
automatic simplification can lose some infinities
Reported by: | burcin | Owned by: | burcin |
---|---|---|---|
Priority: | critical | Milestone: | sage-5.9 |
Component: | symbolics | Keywords: | pynac arithmetic |
Cc: | kcrisman | Merged in: | sage-5.9.beta1 |
Authors: | Burcin Erocal | Reviewers: | Jean-Pierre Flori |
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | #13729 | Stopgaps: |
Description
From this ask.sagemath.org question:
sage: t = tan(x)^2 - tan(x) sage: t.subs(x=pi/2) 0 sage: u = gamma(x) - gamma(x-1) sage: u.subs(x=-1) 0
Attachments (1)
Change History (8)
comment:1 Changed 10 years ago by
- Cc kcrisman added
Changed 10 years ago by
comment:2 Changed 10 years ago by
comment:3 Changed 10 years ago by
- Dependencies set to #13729
- Keywords arithmetic added
- Status changed from new to needs_review
Pynac 0.2.6 contains a fix for this. Updating the spkg is #13729.
comment:4 Changed 10 years ago by
- Reviewers set to Jean-Pierre Flori
- Status changed from needs_review to positive_review
The added doctest tests what it should and passes with updated Pynac, so positive review.
comment:5 Changed 9 years ago by
- Milestone changed from sage-5.5 to sage-pending
comment:6 Changed 9 years ago by
- Milestone changed from sage-pending to sage-5.9
comment:7 Changed 9 years ago by
- Merged in set to sage-5.9.beta1
- Resolution set to fixed
- Status changed from positive_review to closed
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This is now Pynac issue #14. It will be fixed in the next Pynac release.