#19055: Tableau hash depends on subclass
-------------------------------------+-------------------------------------
Reporter: darij | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.9
Component: combinatorics | Resolution:
Keywords: tableaux, hashing | Merged in:
Authors: Darij Grinberg | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
public/combinat/tableau_hash | 27788705a3241374377904895b341c9c504605df
Dependencies: | Stopgaps:
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Comment (by stumpc5):
Comparing to the hash of !GelfandTsetlinPatterns, I see that there also
the inner lists are turned into tuples
{{{
def _hash_(self):
return hash(tuple(map(tuple, self)))
}}}
On the other hand, I would prefer not to see
{{{
sage: a = StandardTableau([[1,2,3]])
sage: b = GelfandTsetlinPattern([[1,2,3]])
sage: hash(a) == hash(b)
True
}}}
This is, I would prefer to keep some information about the class, though
this is not done in GTPs. On the other hand, this is currently **not**
done in many other places either, such as {{{Permutations}}},
{{{Partitions}}}, and {{{Compositions}}}.
Christian
--
Ticket URL: <http://trac.sagemath.org/ticket/19055#comment:4>
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