Changes between Initial Version and Version 1 of Ticket #23891


Ignore:
Timestamp:
09/19/17 08:57:31 (5 years ago)
Author:
mantepse
Comment:

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  • Ticket #23891

    • Property Component changed from PLEASE CHANGE to combinatorics
    • Property Type changed from PLEASE CHANGE to defect
    • Property Summary changed from weak_covers is a method of Permutations(4), but does not work to weak_covers is a method of Permutations(n), but does not work

  • Ticket #23891 – Description

    initial v1  
     1{{{
     2sage: Permutations(4)([1,4,3,2]).weak_covers()
     3---------------------------------------------------------------------------
     4TypeError                                 Traceback (most recent call last)
     5<ipython-input-61-3fd0d11884fd> in <module>()
     6----> 1 Permutations(Integer(4))([Integer(1),Integer(4),Integer(3),Integer(2)]).weak_covers()
     7
     8/home/martin/sage-develop/local/lib/python2.7/site-packages/sage/categories/coxeter_groups.pyc in weak_covers(self, side, index_set, positive)
     9   1922             """
     10   1923             return [ self.apply_simple_reflection(i, side=side)
     11-> 1924                      for i in self.descents(side=side, index_set = index_set, positive = positive) ]
     12   1925
     13   1926         def coxeter_sorting_word(self,c):
     14
     15TypeError: descents() got an unexpected keyword argument 'index_set'
     16}}}