Python | sympy . reduce _ totilent()方法
原文:https://www . geesforgeks . org/python-sympy-reduce _ totilent-method/
借助sympy . reduced _ total()方法,我们可以在 SymPy 中找到Carmichael reduced total function 或 lambda(n) 。reducted _ total(n)或是最小的 m > 0 ,使得所有 k 的相对于 n 是质数。
语法:reduce _ total ent(n)
参数: n–表示整数。
返回:返回最小整数 m > 0,使得 k m % n 对于相对于 n 的所有 k 都等于 1
示例#1:
# import reduced_totient() method from sympy
from sympy.ntheory import reduced_totient
n = 8
# Use reduced_totient() method
reduced_totient_n = reduced_totient(n)
print("lambda({}) = {} ".format(n, reduced_totient_n))
# 1 ^ 2 = 1 (mod 8), 3 ^ 2 = 9 = 1 (mod 8),
# 5 ^ 2 = 25 = 1 (mod 8) and 7 ^ 2 = 49 = 1 (mod 8)
输出:
lambda(8) = 2
例 2:
# import reduced_totient() method from sympy
from sympy.ntheory import reduced_totient
n = 30
# Use reduced_totient() method
reduced_totient_n = reduced_totient(n)
print("lambda({}) = {} ".format(n, reduced_totient_n))
输出:
lambda(30) = 4
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