Tensor, TensorFlow, Machine Learning, Quantum Computing.
indices as |𝛹>ᴀʙᴄ. Now if the 2 qubit matrix U acts on the state 0 and 2, the following is the multiplication of the tensors corresponding to the subspaces : 𝛷ᴊᴀʟ = Uɪᴊᴋʟ 𝛹ɪᴀᴋ So what happens here is that we multiply 𝛹 and U is the subspaces we wanted to apply that is at 0 and 2. What we did was