
doi: 10.1007/bf03321822
Let \(\Phi\) be a Fuchsian group on the unit disk \(\mathbb{D}\). A non-constant, meromorphic function \(f\) is called \(\Phi\)-polymorphic if, for every \(\varphi \in \Phi,\) there is a Moebius transformation \(\gamma\) such that \(f\circ\varphi = \gamma \circ f\). Defining \(f^{*}(\varphi) = \gamma,\) one obtains a homomorphism \[ f^{*}:\Phi \mapsto \text{PSL}(2,\mathbb{C}). \] The image group need not be discrete, though the authors assume it is non-elementary. The main purpose of the paper is to study the function-theoretic properties of \(f\) and its relation to the limit sets and fixed points of \(\Phi\) and its image group.
Fuchsian groups and automorphic functions (aspects of compact Riemann surfaces and uniformization), polymorphic functions, Fuchsian groups, limit sets
Fuchsian groups and automorphic functions (aspects of compact Riemann surfaces and uniformization), polymorphic functions, Fuchsian groups, limit sets
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