title: Holographic representation of space-variant systems: system theory.
abstract: System theory for holographic representation of linear space-variant systems is derived. The utility of the resulting piecewise isoplanatic approximation (PIA) is illustrated by example application to the invariant system, ideal magnifier, and Fourier transformer. A method previously employed to holographically represent a space-variant system, the discrete approximation, is shown to be a special case of the PIA.
authors.forename: R J
authors.initials: RJ
authors.lastname: Marks Ii
authors.forename: T F
authors.initials: TF
authors.lastname: Krile