MIT OpenCourseWare
13 minutes
Hermitian matrices constitute a fundamental class within linear algebra characterized by the property that the matrix equals its own conjugate transpose ($A = A^\dagger$). This structural definition enforces real-valued eigenvalues and orthogonal eigenvectors, distinguishing them as self-adjoint operators under an inner product space defined over complex or real fields. The concept occupies a central subfield of spectral theory and operator algebras, serving as the theoretical bedrock for ensuring stability in quantum mechanical observables and symmetric systems.