Spectral theory

Riesz projector

In mathematics, or more specifically in spectral theory, the Riesz projector is the projector onto the eigenspace corresponding to a particular eigenvalue of an operator (or, more generally, a projector onto an invariant subspace corresponding to an isolated part of the spectrum). It was introduced by Frigyes Riesz in 1912. (Wikipedia).

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Related pages

Resolvent set | Eigenvalues and eigenvectors | Operator theory | Mathematics | Spectrum (functional analysis) | Unbounded operator | Decomposition of spectrum (functional analysis) | Frigyes Riesz | Resolvent formalism | Invariant subspace | Spectral theory