Definition
Parseval's Identity
Let
be a Hilbert space with orthonormal basis . For any with expansion where : Equivalently:
The identity expresses that the inner product is preserved under the isomorphism
.
Parseval's Identity
Let
be a Hilbert space with orthonormal basis . For any with expansion where : Equivalently:
The identity expresses that the inner product is preserved under the isomorphism
.