Adam Glos
We loose in the opposite scenario, hence minus
sum those two to get observable!
if both same - identity (x4)
if one same - cancel out
The rest will form comutator -part
Infinity norm
Infinity norm - Kronecker Product
this is maximum squared eigenvalue
Eigenvalues of A⊗I are the same as A but multiplied
1
2
3
4
1. definition
2. norm of sum
3. norm of identity is one and norm of kronecker product
4.