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Subgroups of finite index of Fuchsian groups

✍ Scribed by A. Howard M. Hoare; Abraham Karrass; Donald Solitar


Publisher
Springer-Verlag
Year
1971
Tongue
French
Weight
612 KB
Volume
120
Category
Article
ISSN
0025-5874

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πŸ“œ SIMILAR VOLUMES


Finitely Presented Normal Subgroups of a
✍ F.E.A. Johnson πŸ“‚ Article πŸ“… 2000 πŸ› Elsevier Science 🌐 English βš– 109 KB

We show that if ⌫ is a finitely presented normal subgroup of a product G = G 1 2 of Fuchsian groups which projects nontrivially to each factor, then ⌫ has finite index in G = G . The proof uses the author's previous reduction of the descrip-1 2 tion of normal subdirect products to the abelian case