Computation of genus 0 Belyi functions. Belyi functions is a captivating field of research in algebraic geometry, complex analysis, Galois theory. However, computation of Belyi functions of degree over 20 is still considered hard. If the desired branching pattern is nearly regular, pull-back transformations of hypergeometric equations to Fuchsian equations with just a few singularities can be used. This allows computation of Belyi functions of degree 60 and beyond. An implementation in Maple for computing genus 0 Belyi functions will be presented. The implementation is available at http://users.uoa.gr/ rvidunas/ComputeBelyi.mpl.

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