Hurwitz's Freeness Property

2008/09/03 by Pierre-Yves Gaillard, Gaillard, Pierre-Yves
Computer Science · #Advanced Algebra and Logic #FOS: Mathematics #General Mathematics (math.GM)

paper · pdf · doi:10.48550/arxiv.0809.0550

openalex publication_date 2008/09/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The groupoid attached to the action of PSL(2,Z) on the irrational reals by linear fractional transformations is free.

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