In this paper, we comment on the complexity of the invariant subspaces (under the bilateral Dirichlet shift f → ζ f) of the harmonic Dirichlet space D. Using the sampling theory of Seip and some work ...
A condition for the existence of Fermi coordinates derived in a previous paper (O'Raifeartaigh 1958) is used to establish some theorems concerning Riemannian spaces ...
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