On Ihara’s modular group. (English) Zbl 0189.02504


group theory
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[1] Ihara, Y.: Algebraic curves modp and arithmetic groups. Proc. Symp. Pure Mathem. A.M.S.9, 265-272 (1966).
[2] Mennicke, J.: OnIhara’s modular group, I. Mimeographed notes, University of Göttingen, April 1967.
[3] Moore, C.: Group extensions ofp-adic and adelic linear groups (forthcoming).
[4] Serre, J. P.: Le problème des groupes de congruence pour SL2 (unpublished manuscript).
[5] Schur, I.: Über die Darstellung der endlichen Gruppen durch gebrochen lineare Substitutionen. J. f. r. u. a. Math.127, 20-50 (1904).
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