#15311: Implement the classical Hall algebra and polynomials
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Reporter: tscrim | Owner: tscrim
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.13
Component: algebra | Resolution:
Keywords: Hall algebra polynomials | Merged in:
Authors: Travis Scrimshaw | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: #15305 | Stopgaps:
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Comment (by darij):
Did you actually do these changes? Because my edits aren't there and I
still don't see HallAlgebra lazily imported. Looks like phases hit you
again? (BTW, are there any good rules on when to import lazily vs.
regularly, and how to import in general? Like, is it better to import `ZZ`
from sage.rings.all, or rather define `ZZ = IntegerRing()` after importing
`IntegerRing` from `sage.rings.integer_ring`?)
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Ticket URL: <http://trac.sagemath.org/ticket/15311#comment:8>
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