#20154: train-tracks
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Reporter: dbenielli | Owner:
Type: task | Status: new
Priority: major | Milestone: sage-7.1
Component: combinatorics | Resolution:
Keywords: free-group | Merged in:
automorphism | Reviewers:
Authors: Dominique | Work issues:
Benielli, Thierry Coulbois | Commit:
Report Upstream: N/A | 8e7f6300f59a3eca9d69233a52fc09b025cb33a2
Branch: | Stopgaps:
u/dbenielli/train_tracks |
Dependencies: |
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Comment (by tscrim):
Replying to [comment:24 mmarco]:
> In any case, we need a class for morphisms of free groups (or more
general, finitely presented groups), so it might be a good opportunity to
design that infrastructure.
This is my opinion as well. Parsing of the input is an API decision and,
IMO, not a good reason to use a specific implementation. Unless you are
using other features of `WordMorphism` that are not (currently) available
to the current group morphisms or I am misunderstanding comment:23.
Actually, I am somewhat not in favor of using words because of the need to
handle inverses in the free group. There should not really be that much of
an implementation difference between the free group using words or GAP,
just an API difference...at least I'd imagine there shouldn't be...
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Ticket URL: <http://trac.sagemath.org/ticket/20154#comment:25>
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