#2809 closed defect (duplicate)
G2 fundamental weights were the negative of what they should be.
Reported by: | bump | Owned by: | mhansen |
---|---|---|---|
Priority: | major | Milestone: | sage-duplicate/invalid/wontfix |
Component: | combinatorics | Keywords: | |
Cc: | sage-combinat | Merged in: | |
Authors: | Reviewers: | ||
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description (last modified by )
In combinat/root_system.py, the fundamental weights for the various root systems are entered by hand. For G2, the fundamental weights were the negatives of what they should be.
diff -r 80b506b8e07c sage/combinat/root_system.py --- a/sage/combinat/root_system.py Tue Apr 01 19:18:55 2008 -0700 +++ b/sage/combinat/root_system.py Sat Apr 05 08:40:46 2008 -0700 @@ -788,11 +788,11 @@ class AmbientLattice_g(AmbientLattice_ge """ EXAMPLES: sage: CartanType(['G',2]).root_system().ambient_lattice().fundamental_weights() - [(-1, 0, 1), (-2, 1, 1)] + [(1, 0, -1), (2, -1, -1)] """ return [ c0*self._term(0)+c1*self._term(1)+c2*self._term(2) \ for [c0,c1,c2] in - [[-1,0,1],[-2,1,1]]] + [[1,0,-1],[2,-1,-1]]] def WeylDim(type, coeffs):
Attachments (1)
Change History (4)
Changed 13 years ago by
comment:1 Changed 13 years ago by
- Milestone changed from sage-3.0 to sage-duplicate/invalid
- Resolution set to duplicate
- Status changed from new to closed
comment:2 Changed 12 years ago by
- Cc sage-combinat added
comment:3 Changed 6 years ago by
- Description modified (diff)
- Report Upstream set to N/A
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This is a dupe of #2808, so I am closing it. Dan: once you open a ticket and you hit "submit" you should remove the "preview" bit from the url before going on. This is a buglet in trac and you aren't the first one who has been bitten by it.
Cheers,
Michael