#14789: Implement hyperplane arrangements
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Reporter: kcrisman | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.11
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Dependencies:
Stopgaps: |
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Comment (by dimpase):
Replying to [comment:17 darij]:
[...]
> - Not sure if this is a good thing:
>
> {{{
> sage: a = HyperplaneArrangement([[2,4,6],[1,0,1]])
> sage: b = HyperplaneArrangement([[1,0,1],[2,4,6]])
> sage: a == b
> True
[...]
to me, this is an indication of an issue that has to be carefully sorted
out: namely, a notion of equality vs isomorphism.
Especially as one might think about creating arrangements from other data,
e.g. often in my work I see arrangements obtained from a set of points by
taking all the possible hyperplanes on them.
Until this is sorted out, I'd rather think of disabling `==` all together.
--
Ticket URL: <http://trac.sagemath.org/ticket/14789#comment:18>
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