#8322: on sage.combinat.tableau.insert_word() , parameter left= is broken (fix
provided)
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Reporter: drini | Owner: somebody
Type: defect | Status: new
Priority: major | Milestone: sage-4.7
Component: combinatorics | Keywords:
Author: Pedro Sanchez | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by jbandlow):
The left=True parameter does have an effect. One can compare:
{{{
sage: t = Tableau([[2, 3], [3]])
sage: w = [1, 1, 3, 3]
sage: t.insert_word(w)
[[1, 1, 3, 3], [2, 3], [3]]
sage: t.insert_word(w, left=True)
[[1, 1, 2, 3, 3, 3], [3]]
}}}
The latter is returning the result of Schensted inserting the
concatenation of the words w and the reading word of t (in that order).
This operation is used in the code for katabolism (and possibly
elsewhere), and reflects multiplication in the plactic monoid.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8322#comment:2>
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