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arXiv · 1602.00283

A panaroma of the fundamental group of the modular orbifold

A. Muhammed Uludağ·Ayberk Zeytin
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Abstract

We give an overview of the category of subgroups of the modular group, incorporating both the tame part, i.e. finite index subgroups, and the non-tame part, i.e. the rest. We also discuss arithmetic related questions which exist in both the tame part (via Belyi's theorem) and the non-tame part.

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A. Muhammed Uludağ, Ayberk Zeytin. 2016-01-31. A panaroma of the fundamental group of the modular orbifold. https://arxiv.org/abs/1602.00283

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