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arxiv: 0901.3735 · v1 · submitted 2009-01-23 · 🧮 math.NT · math.AG· math.GR

Trees, quaternion algebras and modular curves

classification 🧮 math.NT math.AGmath.GR
keywords algebrasquaternionactionapplicationsarithmeticbruhat-titscertaincurves
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We study the action on the Bruhat-Tits tree of unit groups of maximal orders in certain quaternion algebras over $\mathbb{F}_q(T)$ and discuss applications to arithmetic geometry and group theory.

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