#14789: Implement hyperplane arrangements
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Reporter: kcrisman | Owner: sage-combinat
Type: enhancement | Status: needs_info
Priority: major | Milestone: sage-5.13
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by vbraun):
I'm working on making (d,a,b,c) mean a*x+b*y+c*z+d=0. So the sign is
expected. And the order as well as the sign matches the notation used for
polyhedra. If you want to avoid ambiguity then list/tuple plus scalar also
define a hyperplane::
{{{
sage: H.<x,y> = HyperplaneArrangements(QQ)
sage: H(x, y, x+y-1)
Arrangement <y | x | x + y - 1>
sage: H([0,1,0], [0,0,1], [-1,1,1])
Arrangement <y | x | x + y - 1>
sage: H([(1,1),0], [(2,3),-1], [(4,5),3])
Arrangement <x + y | 2*x + 3*y - 1 | 4*x + 5*y + 3>
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/14789#comment:40>
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