Source: wikibot/unitary-matrix
= Unitary matrix
{wiki=Unitary_matrix}
A **unitary matrix** is a complex square matrix \\( U \\) that satisfies the condition: \\\[ U^\\dagger U = U U^\\dagger = I \\\] where \\( U^\\dagger \\) is the conjugate transpose (also known as the Hermitian transpose) of \\( U \\), and \\( I \\) is the identity matrix of the same dimension as \\( U \\).