Calculational Tools

partial_trace(rho, keep, dims[, optimize])	Calculate the partial trace.
outer_product(bra1, bra2)	Given two possibly complex row vectors bra1 and bra2 construct the outer product.
inner_product(bra1, bra2)	Given two possibly complex row vectors bra1 and bra2 construct the inner product.
sqrtm_psd(matrix, check_finite)	Calculates the square root of a matrix that is positive semidefinite.