D. A. Kazhdan, “On A characteristic of congruence subgroups of the group <nobr>$G=SL(2,\mathbb{Z})$</nobr>”, Funktsional. Anal. i Prilozhen., 1970, Volume 4, Issue 2,Pages <nobr>89

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Funktsional. Anal. i Prilozhen., 1970 Volume 4, Issue 2, Pages 89–90 (Mi faa2659)

Brief communications

On A characteristic of congruence subgroups of the group $G=SL(2,\mathbb{Z})$

D. A. Kazhdan

Received: 19.12.1969

English version: Functional Analysis and Its Applications, 1970, 4:2, 169–170

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