#14772: Remove CombinatorialClass from Permutations
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Reporter: tscrim | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.11
Component: combinatorics | Resolution:
Keywords: days49 | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Travis Scrimshaw | Merged in:
Dependencies: #8386 #14519 #14808 | Stopgaps:
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Comment (by darij):
Looks like MRO. The class Arrangements inherits from Permutations.
Permutations of a multiset have their own cardinality() method, which
gives the (wrong) 1260 answer in this case. The correct 22 answer is
obtained by the standard cardinality() method of FiniteEnumeratedSets (?)
which just takes the length of the list().
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14772#comment:18>
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