The magic functions and automorphisms of a domain
نویسنده
چکیده
We introduce the notion of magic functions of a general domain in C and show that the set of magic functions of a given domain is an intrinsic complex-geometric object. We determine the set of magic functions of the symmetrised bidisc G, and thereby find all automorphisms of G and a formula for the Carathéodory distance on G.
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