def __iter__(self):
"""
An iterator for the standard ribbon of ``self``.
EXAMPLES::
sage: [t for t in StandardRibbonShapedTableaux([2,2])]
[[[None, 2, 4], [1, 3]],
[[None, 2, 3], [1, 4]],
[[None, 1, 4], [2, 3]],
[[None, 1, 3], [2, 4]],
[[None, 1, 2], [3, 4]]]
"""
for p in descents_composition_list(self.shape):
yield self.from_permutation(p)
def __iter__(self):
"""
An iterator for the standard ribbon of ``self``.
EXAMPLES::
sage: [t for t in StandardRibbonShapedTableaux([2,2])]
[[[None, 2, 4], [1, 3]],
[[None, 2, 3], [1, 4]],
[[None, 1, 4], [2, 3]],
[[None, 1, 3], [2, 4]],
[[None, 1, 2], [3, 4]]]
"""
for p in descents_composition_list(self.shape):
yield self.from_permutation(p)
def __iter__(self):
"""
An iterator for the standard ribbon of ribbon shape shape.
EXAMPLES::
sage: [t for t in StandardRibbons([2,2])]
[[[2, 4], [1, 3]],
[[2, 3], [1, 4]],
[[1, 4], [2, 3]],
[[1, 3], [2, 4]],
[[1, 2], [3, 4]]]
"""
for p in permutation.descents_composition_list(self.shape):
yield from_permutation(p)
def __iter__(self):
"""
An iterator for the standard ribbon of ribbon shape shape.
EXAMPLES::
sage: [t for t in StandardRibbons([2,2])]
[[[2, 4], [1, 3]],
[[2, 3], [1, 4]],
[[1, 4], [2, 3]],
[[1, 3], [2, 4]],
[[1, 2], [3, 4]]]
"""
for p in permutation.descents_composition_list(self.shape):
yield from_permutation(p)
