#7983: Notion of descent/major index in tableau.py is not mathematically
standard
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Reporter: jbandlow | Owner: sage-combinat
Type: defect | Status: needs_review
Priority: major | Milestone:
Component: combinatorics | Resolution:
Keywords: combinat, tableaux | Work issues:
Report Upstream: N/A | Reviewers: jbandlow
Authors: arattan, Darij Grinberg | Merged in:
Dependencies: #8392 | Stopgaps:
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Comment (by darij):
Updated. {{{promotion_inverse}}} now works for non-rectangular tableaux as
well (using a new {{{_slide_down}}} method). Moreover, it works fine for
the empty tableau. Furthermore, {{{promotion}}} and
{{{promotion_inverse}}} have been redefined on {{{StandardTableau}}} to
automatically compute the {{{n}}} variable and to cast the result as a
{{{StandardTableau}}} (not just a {{{Tableau}}}).
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7983#comment:15>
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