#18133: Implement Orlik-Solomon algebra of an arrangement
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Reporter: kcrisman | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.10
Component: geometry | Resolution:
Keywords: hyperplane | Merged in:
arrangements | Reviewers:
Authors: Travis Scrimshaw, | Work issues:
William Slofstra | Commit:
Report Upstream: N/A | a7bcbadf2efdd95ef76dd7d8b2744ae76b5d9f1a
Branch: | Stopgaps:
public/algebras/orlik_solomon-18133|
Dependencies: |
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Comment (by darij):
Technical question... can we rely on frozensets being indices of a
combinatorial free module? They don't compare well:
{{{
sage: frozenset([2]) < frozenset([3])
False
sage: frozenset([3]) < frozenset([2])
False
sage: frozenset([3]) == frozenset([2])
False
sage: frozenset([2]) > frozenset([3])
False
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/18133#comment:19>
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