#12339: Free Groups
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Reporter: mmarco |
Owner: joyner
Type: enhancement |
Status: needs_work
Priority: major |
Milestone: sage-5.5
Component: group theory |
Resolution:
Keywords: free groups, finitely presented groups, braids | Work
issues:
Report Upstream: N/A |
Reviewers: Volker Braun
Authors: Miguel Marco | Merged
in:
Dependencies: #6391, #13687, #13588 |
Stopgaps:
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Comment (by jhpalmieri):
Thanks, Volker, your new patches fixed my problem. It sounds like you're
saying that there is no good way to have
{{{
sage: G.<e0> = FreeGroup()
sage: relns_G = [e0^2]
sage: H.<e0, e1> = FreeGroup()
sage: relns_H = [e0^2, e1]
sage: G2 = G / relns_G
sage: H2 = H / relns_H
sage: G2 == H2
}}}
return True? That's unfortunate. Should `__eq__` raise a
`NotImplementedError` instead, or is that too unpythonic?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12339#comment:65>
Sage <http://www.sagemath.org>
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