Status: Valid
Owner: ----
Labels: Type-Enhancement Priority-Medium Combinatorics
New issue 4028 by [email protected]: Permutation * PermutationGroup should
give the coset
http://code.google.com/p/sympy/issues/detail?id=4028
In [5]: a
Out[5]: Permutation(1, 2)
In [6]: b
Out[6]: Permutation(0, 1)
In [7]: G
Out[7]:
PermutationGroup([
Permutation(1, 2),
Permutation(2)(0, 1)])
In [8]: a*G
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-8-b860fc9136f1> in <module>()
----> 1 a*G
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/combinatorics/permutations.py
in
__mul__(self, other)
1241 a = self.array_form
1242 # __rmul__ makes sure the other is a Permutation
-> 1243 b = other.array_form
1244 if not b:
1245 perm = a
AttributeError: 'PermutationGroup' object has no attribute 'array_form'
See https://twitter.com/cwlcks/status/380359799675695104.
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