#19686: Category of finite posets: lower_set() broken
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Reporter: jmantysalo | Owner:
Type: defect | Status: new
Priority: minor | Milestone: sage-6.10
Component: combinatorics | Keywords: poset
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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{{{
P = Posets.PentagonPoset()
print P.principal_order_ideal(3)
print P.principal_lower_set(3)
print P.order_ideal([3])
print P.lower_set([3])
}}}
gives
{{{
[0, 2, 3]
[0, 2, 3]
[0, 2, 3]
TypeError: 'NotImplementedType' object is not callable
}}}
And this seems like a bug. CC to nthiery as this probably relates to
category code.
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Ticket URL: <http://trac.sagemath.org/ticket/19686>
Sage <http://www.sagemath.org>
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