Approximation problems and representations of Hardy spaces in circular domains
Studia Mathematica, Tome 136 (1999) no. 3, pp. 255-269

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We derive various approximation results in the theory of Hardy spaces on circular domains G. Two applications are given, one to operators which admit a nice representation of $H^∞(G)$, and the other to extremal problems with links to the theory of differential equations.
I. Chalendar;  . Approximation problems and representations of Hardy spaces in circular domains. Studia Mathematica, Tome 136 (1999) no. 3, pp. 255-269. doi: 10.4064/sm-136-3-255-269
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