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Resumen de Approximation by invertible functions of $H^{\infty}$

Artur Nicolau Nos, Daniel Suárez

  • We provide an analytic proof that if $H^\infty$ is the algebra of bounded analytic functions on the unit disk, $A$ is a Banach algebra and $f: H^\infty \rightarrow A$ is a Banach algebras morphism with dense image, then $f((H^\infty)^{-1})$ is dense in $A^{-1}$.


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