In [103]:
import numpy as np
In [111]:
p=[[1,1,1],[0,-1,-1],[1,1,0]]
In [112]:
pi = np.linalg.inv(p)
In [113]:
t=[[1,1,1],[1,1,-1],[1,1,1]]
In [114]:
np.dot(np.dot(pi, t), p)
Out[114]:
In [115]:
np.dot(p,pi)
Out[115]:
In [116]:
pi
Out[116]:
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