#17798: Create a class for Coxeter matrices and types
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Reporter: tscrim | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.6
Component: group theory | Resolution:
Keywords: Coxeter, groups, | Merged in:
matrices, types | Reviewers:
Authors: Travis Scrimshaw | Work issues:
Report Upstream: N/A | Commit:
Branch: | 5484c5d6077138d6ed79d5d19af38c1f1da120ea
public/combinat/coxeter_matrices-17798| Stopgaps:
Dependencies: |
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Comment (by tscrim):
Actually, I will re-enable that caching; there was a time when I was
considering the `CoxeterMatrix` to be a `UniqueRepresentation`, but it was
easier to make it a usual class. However, for (better or) worse, pythonic
code is ducktyped code since it is a weakly-typed language. Yet I tried to
make case-by-case as much as possible (following what I did for
`CartanMatrix`). There is some indirection done in `CoxeterMatrix` by
converting the Cartan type to a Coxeter type, but I felt this was the best
way to do things (at least with the current implementation). Yet this part
isn't ducktyped. So what my long-winded reply is saying is I'm open to
suggestions, but this is the local optimal code I'm at.
--
Ticket URL: <http://trac.sagemath.org/ticket/17798#comment:3>
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