Opened 8 years ago
Closed 7 years ago
#17402 closed defect (fixed)
SR.power_series cannot handle symbolic series
| Reported by: | Ralf Stephan | Owned by: | |
|---|---|---|---|
| Priority: | major | Milestone: | sage-7.2 |
| Component: | symbolics | Keywords: | conversion, ring |
| Cc: | Merged in: | ||
| Authors: | Ralf Stephan | Reviewers: | Volker Braun |
| Report Upstream: | N/A | Work issues: | |
| Branch: | 00c35cd (Commits, GitHub, GitLab) | Commit: | 00c35cdfa9e4328f099f6f95a00ab29e2cc2037f |
| Dependencies: | #17399, #17659 | Stopgaps: |
Status badges
Description
sage: x=var('x')
sage: s=(1/(1-x)).series(x,6)
sage: ps=s.power_series(SR)
sage: ps
x^5 + x^4 + x^3 + x^2 + x + Order(x^6) + 1 + O(x)
sage: ps=s.power_series(QQ)
...
TypeError: unable to convert 1 + 1*x + 1*x^2 + 1*x^3 + 1*x^4 + 1*x^5 + Order(x^6) to a rational
This is analogous to #16203 and can be worked around using truncate() but really should work out of the box.
Change History (14)
comment:1 Changed 8 years ago by
| Branch: | → u/rws/sr_power_series_cannot_handle_symbolic_series |
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comment:2 Changed 8 years ago by
| Authors: | → Ralf Stephan |
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| Commit: | → 6cd5286d987cf944621fb7666f1756b7785bcd0b |
| Keywords: | conversion ring added |
| Status: | new → needs_review |
comment:3 Changed 8 years ago by
| Commit: | 6cd5286d987cf944621fb7666f1756b7785bcd0b → bcdb893753f2ce02eaf370b10265b2002c7f6b31 |
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Branch pushed to git repo; I updated commit sha1. New commits:
| bcdb893 | 17402: handle series in SR.power_series()
|
comment:4 Changed 8 years ago by
| Dependencies: | → #17399 |
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comment:5 Changed 8 years ago by
| Branch: | u/rws/sr_power_series_cannot_handle_symbolic_series → public/17402 |
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comment:6 Changed 8 years ago by
| Commit: | bcdb893753f2ce02eaf370b10265b2002c7f6b31 → 353612066f6a407d4428c54f18cec1611e11181b |
|---|---|
| Dependencies: | #17399 → #17399, #17659 |
comment:7 Changed 8 years ago by
| Commit: | 353612066f6a407d4428c54f18cec1611e11181b → 95daf79fcc402bd691a201e0956190f4a5af94fb |
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Branch pushed to git repo; I updated commit sha1. New commits:
| 95daf79 | Merge branch 'develop' into t/17402/public/17402
|
comment:9 Changed 8 years ago by
| Milestone: | sage-6.5 → sage-pending |
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Pending because #17659 is pending.
comment:10 Changed 7 years ago by
| Branch: | public/17402 → u/rws/17402-1 |
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comment:11 Changed 7 years ago by
| Commit: | 95daf79fcc402bd691a201e0956190f4a5af94fb → 00c35cdfa9e4328f099f6f95a00ab29e2cc2037f |
|---|---|
| Milestone: | sage-pending → sage-7.2 |
New commits:
| 00c35cd | 17402: add SymbolicSeries.power_series
|
comment:12 Changed 7 years ago by
| Reviewers: | → Volker Braun |
|---|---|
| Status: | needs_review → positive_review |
comment:13 Changed 7 years ago by
The diff shown by the branch link of this ticket is different than what I get with git trac pull into develop. I hope this is just a trac problem.
comment:14 Changed 7 years ago by
| Branch: | u/rws/17402-1 → 00c35cdfa9e4328f099f6f95a00ab29e2cc2037f |
|---|---|
| Resolution: | → fixed |
| Status: | positive_review → closed |
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New commits:
17399: do not let maxima handle ex.series coefficients17399: roll back previous commit to allow merge of 1742817438: implement coeff list17438: deprecate ex.coeff/coeffs()17438: implement ex.list()Merge branch 'u/rws/coefficients_of_symbolic_expressions_revamp' of trac.sagemath.org:sage into t/17399/fix_coefficients_for_symbolic_series17399: handle series in ex.coefficients()