# Boundary values in range spaces of co-analytic truncated Toeplitz operators

@article{Hartmann2010BoundaryVI,
title={Boundary values in range spaces of co-analytic truncated Toeplitz operators},
author={Andreas Hartmann and William T. Ross},
journal={Publicacions Matematiques},
year={2010},
volume={56},
pages={191-223}
}
• Published 18 December 2010
• Mathematics
• Publicacions Matematiques
Functions in backward shift invariant subspaces have nice analytic continuation properties outside the spectrum of the inner function de ning the space. Inside the spectrum of the inner function, Ahern and Clark showed that under some distribution condition on the zeros and the singular measure of the inner function, it is possible to obtain non-tangential boundary values of every function in the backward shift invariant subspace as well as for their derivatives up to a certain order. Here we…
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where {a,} is a Blaschke sequence (E(1 [ a , ] ) < ~ ) (gv/]a~] ~ 1 is unde r s tood whenever a , =0 ) , a is a finite, posi t ive, cont inuous, s ingular measure , a n d r~ >~0, ~ r v < ~ . I n th