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A Beurling-Lax-Halmos theorem for spaces with a complete Nevanlinna-Pick factor (1905.05804v2)
Published 14 May 2019 in math.FA and math.CV
Abstract: We provide a short argument to establish a Beurling-Lax-Halmos theorem for reproducing kernel Hilbert spaces whose kernel has a complete Nevanlinna-Pick factor. We also record factorization results for pairs of nested invariant subspaces.