#15536: Implement symplectic and orthogonal bases of Sym
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Reporter: tscrim | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.1
Component: combinatorics | Resolution:
Keywords: days54, sym | Merged in:
Authors: Travis Scrimshaw | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
public/combinat/sf/sp_orth | 9ea2a2c1eafde6abc39d819002cff6ea43984108
Dependencies: | Stopgaps:
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Comment (by tscrim):
Replying to [comment:2 darij]:
> I fear Nicolas is wrong here
>
> ...
>
> The problem is that the counit is still defined as the constant
coefficient, but that's only true for graded bases.
Yep, but that's technically a fault with the generic symmetric function
code, not the category (which I think does it via coercion by default).
Fixed.
> The same issue would be happening with antipode and degree_negation if
not for the fact that the o and sp bases happen to be graded w.r.t. the
induced ZZ/2ZZ-grading.
Again, not the category, but it's nice to know these things.
----
New commits:
||[[http://git.sagemath.org/sage.git/commit/?id=9ea2a2c|9ea2a2c]]||{{{Added
comment about ZZ / 2ZZ grading.}}}||
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Ticket URL: <http://trac.sagemath.org/ticket/15536#comment:5>
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