示例#1
0
    def last(self):
        """
        Return the last standard ribbon of ``self``.

        EXAMPLES::

            sage: StandardRibbonShapedTableaux([2,2]).last()
            [[None, 1, 2], [3, 4]]
        """
        return self.from_permutation(descents_composition_last(self.shape))
示例#2
0
文件: ribbon.py 项目: bgxcpku/sagelib
 def last(self):
     """
     Returns the first standard ribbon of ribbon shape shape.
     
     EXAMPLES::
     
         sage: StandardRibbons([2,2]).last()
         [[1, 2], [3, 4]]
     """
     return from_permutation(permutation.descents_composition_last(self.shape))
示例#3
0
    def last(self):
        """
        Return the last standard ribbon of ``self``.

        EXAMPLES::

            sage: StandardRibbonShapedTableaux([2,2]).last()
            [[None, 1, 2], [3, 4]]
        """
        return self.from_permutation(descents_composition_last(self.shape))
示例#4
0
    def last(self):
        """
        Returns the first standard ribbon of ribbon shape shape.

        EXAMPLES::

            sage: StandardRibbons([2,2]).last()
            [[1, 2], [3, 4]]
        """
        return from_permutation(permutation.descents_composition_last(self.shape))