计算𝐴的弗罗比尼乌斯范数，和𝐵的无穷范数，用python的numpy库的代码实现

Sure! 这里是计算A的弗罗比尼乌斯范数和B的无穷范数的Python代码：

import numpy as np

# define matrix A and B
A = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])
B = np.array([[1, -2, 3], [4, -5, 6], [7, -8, 9]])

# calculate frobenius norm of A
frobenius_norm_A = np.linalg.norm(A, 'fro')
print("Frobenius norm of A:", frobenius_norm_A)

# calculate infinity norm of B
infinity_norm_B = np.linalg.norm(B, np.inf)
print("Infinity norm of B:", infinity_norm_B)

希望对你有帮助！