#14141: Implementation of Knutson-Tao puzzles
----------------------------------------------------------------------+-----
Reporter: aschilling |
Owner: sage-combinat
Type: enhancement |
Status: needs_review
Priority: major |
Milestone: sage-5.10
Component: combinatorics |
Resolution:
Keywords: puzzles, Littlewood-Richardson coefficiens, days45 | Work
issues:
Report Upstream: N/A |
Reviewers: Allen Knutson, Liz Beazley, Ed Richmond
Authors: Franco Saliola, Avinash Dalal, Anne Schilling |
Merged in:
Dependencies: |
Stopgaps:
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Comment (by aschilling):
Frédéric, thank you for the comments. They should be fixed now. Currently,
a more serious issue is the following that Liz observed:
{{{
sage: Hps = PuzzleSolver("H")
sage: Hsolns = Hps('001001', '001010')
sage: Puzz = Hsolns[0]
sage: Puzz.LR_tab_from_puzzle()
---------------------------------------------------------------------------
AssertionError Traceback (most recent call
last)
<ipython-input-39-2284d874276b> in <module>()
----> 1 Puzz.LR_tab_from_puzzle()
/Applications/sage-5.9.beta2/local/lib/python2.7/site-
packages/sage/combinat/knutson_tao_puzzles.pyc in LR_tab_from_puzzle(self)
1629 for j in range(0,lam[k-1]):
1630 LRrow.append(None)
-> 1631 LRrow.extend(self.path_thru_puzzle(i+1))
1632 LRtableaux.append(LRrow)
1633 return SkewTableau(LRtableaux)
/Applications/sage-5.9.beta2/local/lib/python2.7/site-
packages/sage/combinat/knutson_tao_puzzles.pyc in path_thru_puzzle(self,
coord)
1565 """
1566 i = coord
-> 1567 assert self._ne_labels[coord-1] == '1', "The coordinate
needs to be a coordinate of a 1 on the north east boundary"
1568 j = self._n
1569 k = 0
AssertionError: The coordinate needs to be a coordinate of a 1 on the
north east boundary
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14141#comment:7>
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