#15150: Implement NCSym
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Reporter: tscrim | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.12
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: Travis Scrimshaw | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: #15143 | Stopgaps:
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Changes (by tscrim):
* status: new => needs_review
Comment:
Okay, the patch is now ready for first review. It has full doctest
coverage and all tests pass for me. I've removed some of the coercions in
the old version since I was worried about possibly breaking coercion
commutative diagrams.
Some of the things I'm not perfectly happy about (but can live with
currently):
- A descriptive name of the '''q''', '''x''', and '''w''' bases.
- No antipode for the '''w''' basis.
- Creating the `SymmetricFunctions` base object when creating
`SymmetricFunctionNonCommutingVariables` in order to set up the coercion.
- Is it safe to put the natural maps `Sym -> NCSym` and `NSym -> NCSym` as
coercions?
The references I used are included in the documentation now too.
--
Ticket URL: <http://trac.sagemath.org/ticket/15150#comment:7>
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