Rigged Hilbert space
Construction linking the study of "bound" and continuous eigenvalues in functional analysis / From Wikipedia, the free encyclopedia
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In mathematics, a rigged Hilbert space (Gelfand triple, nested Hilbert space, equipped Hilbert space) is a construction designed to link the distribution and square-integrable aspects of functional analysis. Such spaces were introduced to study spectral theory in the broad sense.[vague] They bring together the 'bound state' (eigenvector) and 'continuous spectrum', in one place.
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