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Function theory on the Neil parabola

Greg Knese

math.CVarXiv:math/0512473

Abstract

We give a formula for the Carath\'eodory distance on the Neil parabola, the variety z2=w3 restricted to the bidisk; thus making it the first variety with a singularity to have its Carath\'eodory distance explicitly computed. In addition, we relate this to a mixed Carath\'eodory-Pick interpolation problem for which known interpolation theorems do not apply. Finally, we prove a bounded holomorphic function extension result from the Neil parabola to the bidisk.

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