Inner Product

$⟨A,B⟩=\text{Tr}(A^{\ast }B)$

$A^{\ast }$ is Conjugate Transpose

This inner product is often used in applications such as matrix norms, projections, and defining orthogonality between matrices.

이걸 Euclidean space 에서의 Vector 간 관계로 한정하면 Dot product.

• Inner Products and Norms:

norm