Opened 12 years ago
Last modified 12 years ago
#6036 closed defect
[with patch, needs review] a bug in polynomial() for PolynomialRing(GF(5),2) — at Version 3
Reported by: | klee | Owned by: | Somebody |
---|---|---|---|
Priority: | minor | Milestone: | sage-4.0 |
Component: | basic arithmetic | Keywords: | |
Cc: | Merged in: | ||
Authors: | Reviewers: | ||
Report Upstream: | Work issues: | ||
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description (last modified by )
This works:
sage: R.<x,y>=PolynomialRing(QQ,2) sage: a=x^2+x*y+y sage: a.polynomial(x) x^2 + y*x + y But this does not work: sage: R.<x,y>=PolynomialRing(GF(5),2) sage: a=x^2+x*y+y sage: a.polynomial(x) Traceback (most recent call last): ... TypeError: 'tuple' object cannot be interpreted as an index
I traced this bug, and found that
sage: B=QQ[x] sage: print B({0:1,1:2}) 2*x + 1 sage: print B({(0,):1,(1,):2}) 2*x + 1 sage: B=GF(5)[x] sage: print B({0:1,1:2}) 2*x + 1 sage: print B({(0,):1,(1,):2}) Traceback (most recent call last): ... TypeError: 'tuple' object cannot be interpreted as an index
I think the second form is not acceptable. Then the function remove_from_tuple() in sage.rings.polynomial.multi_polynomial.pyx should be revised as it output (1,) from (1,2) for example.
Change History (6)
comment:1 Changed 12 years ago by
- Component changed from algebra to basic arithmetic
- Milestone changed from sage-4.0 to sage-4.0.1
- Summary changed from a bug in polynomial() to a bug in polynomial() for PolynomialRing(GF(5),2)
Changed 12 years ago by
Changed 12 years ago by
comment:2 Changed 12 years ago by
- Description modified (diff)
- Summary changed from a bug in polynomial() for PolynomialRing(GF(5),2) to [with patch, needs review] a bug in polynomial() for PolynomialRing(GF(5),2)
comment:3 Changed 12 years ago by
- Description modified (diff)
Changed 12 years ago by
Note: See
TracTickets for help on using
tickets.