SymPy | Permutation.mul_inv() in Python

Permutation.mul_inv() : mul_inv() is a sympy Python library function that returns the mul inverse other*~self, self and other have _array_form.

Syntax : sympy.combinatorics.permutations.Permutation.mul_inv()

Return : the mul inverse other*~self, self and other have _array_form.

Code #1 : mul_inv() Example

 `# Python code explaining ` `# SymPy.Permutation.mul_inv() ` ` `  `# importing SymPy libraries ` `from` `sympy.combinatorics.partitions ``import` `Partition ` `from` `sympy.combinatorics.permutations ``import` `Permutation ` ` `  `# Using from  ` `# sympy.combinatorics.permutations.Permutation.mul_inv() method  ` ` `  `# creating Permutation ` `a ``=` `Permutation([[``2``, ``0``], [``3``, ``1``]]) ` ` `  `b ``=` `Permutation([``1``, ``3``, ``5``, ``4``, ``2``, ``0``]) ` ` `  ` `  `print` `(``"Permutation a - mul_inv form : "``, a.mul_inv(a)) ` `print` `(``"Permutation b - mul_inv form : "``, b.mul_inv(b)) `

Output :

Permutation a – mul_inv form : (3)
Permutation b – mul_inv form : (5)

Code #2 : mul_inv() Example – 2D Permutation

 `# Python code explaining ` `# SymPy.Permutation.mul_inv() ` ` `  `# importing SymPy libraries ` `from` `sympy.combinatorics.partitions ``import` `Partition ` `from` `sympy.combinatorics.permutations ``import` `Permutation ` ` `  `# Using from sympy.combinatorics.permutations.Permutation.mul_inv() method  ` ` `  `# creating Permutation ` `a ``=` `Permutation([[``2``, ``4``, ``0``],  ` `                 ``[``3``, ``1``, ``2``], ` `                 ``[``1``, ``5``, ``6``]]) ` ` `  ` `  `print` `(``"Permutation a - mul_inv form : "``, a.mul_inv(a)) `

Output :

Permutation a – mul_inv form : (6)

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