Orthogonality relations for bivariate Bernstein-Szegő measures

preprint2011arXivOpen access

Abstract

The orthogonality properties of certain subspaces associated with bivariate Bernstein-Szegő measures are considered. It is shown that these spaces satisfy more orthogonality relations than expected from the relations that define them. The results are used to prove a Christoffel-Darboux like formula for these measures.

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