Opened 8 years ago
Last modified 6 years ago
#13810 closed defect
Galois group when polynomial has too high degree — at Version 6
Reported by: | jmantysalo | Owned by: | davidloeffler |
---|---|---|---|
Priority: | minor | Milestone: | sage-6.8 |
Component: | number fields | Keywords: | |
Cc: | Merged in: | ||
Authors: | Reviewers: | ||
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description (last modified by )
In 5.4, with KASH installed:
NumberField(x^21-2, 'a').galois_group(type="pari").order()
gives answer 252, but with
NumberField(x^22-2, 'a').galois_group(type="pari").order()
I got
Error, the variable '_s_' must have a value
I guess this relates to kash interface.
Change History (6)
comment:1 Changed 8 years ago by
comment:2 Changed 8 years ago by
- Description modified (diff)
comment:3 Changed 8 years ago by
- Milestone changed from sage-5.11 to sage-5.12
comment:4 Changed 7 years ago by
In 5.13beta1 with kash package
NumberField(x^15-2, 'a').galois_group(type="pari").order()
gives
ValueError: Index n must be in {1,..,None}
comment:5 Changed 7 years ago by
- Milestone changed from sage-6.1 to sage-wishlist
comment:6 Changed 7 years ago by
- Description modified (diff)
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Tested with 5.10: After trying R.<x>=QQ[]; (x^{23-2).galois_group().order() I can't calculate for example R.<x>=QQ[]; (x}20-2).galois_group().order(). It seems that internal(?) kash instance fails and Sage don't notice it. User must restart worksheet to get this running again.