Python中的SymPy Permutation.rmul()

Permutation.rmul() : rmul()是一个sympy Python库函数，返回permutation的积。

语法 : sympy.combinatorics.permutations.Permutation.rmul()

返回： permutation的乘积。

代码 #1 : rmul() 示例

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

输出 :

Permutation a – rmul form : (0 1 3 4 2 5)
Permutation b – rmul form : (0 2)(1 3)

代码 #2 : rmul() 示例 – 二维互换

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

输出 :

Permutation a – rmul form : (0 3 5 6 1 2 4)