Abstract
We consider the behaviour of holomorphic functions on a bounded open subset of the plane, satisfying a Lipschitz condition with exponent \(\alpha \), with \(0<\alpha <1\), in the vicinity of an exceptional boundary point where all such functions exhibit some kind of smoothness. Specifically, we consider the relation between the abstract idea of a bounded point derivation on the algebra of such functions and the classical complex derivative evaluated as a limit of difference quotients. We obtain a result which applies, for example, when the open set admits an interior cone at the special boundary point.
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Dedicated to Lawrence Zalcman on the occasion of his $$70$$ 70 th birthday.
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O’Farrell, A.G. Boundary smoothness of analytic functions. Anal.Math.Phys. 4, 131–144 (2014). https://doi.org/10.1007/s13324-014-0074-0
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DOI: https://doi.org/10.1007/s13324-014-0074-0