On torsionless subgroups of infinitely generated Fuchsian groups
نویسندگان
چکیده
منابع مشابه
Infinitely Generated Veech Groups
We give a positive response to a question of W. Veech: Infinitely generated Veech groups do exist.
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It has been known for many years that a finitely generated fuchsian group G i.e. a finitely generated discrete subgroup of orientation-preserving isometries of the hyperbolic plane contains a torsion free subgroup of finite index. The known proofs are by representations in the symmetric groups cf. Fox [3] or by the method of congruence subgroups cf. Mennicke [4]. The latter method extends to al...
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ژورنال
عنوان ژورنال: Annales Academiae Scientiarum Fennicae Series A I Mathematica
سال: 1979
ISSN: 0066-1953
DOI: 10.5186/aasfm.1978-79.0428