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Irrationality of \(\pi^ 2\), periods of an elliptic curve and \(\Gamma_ 1(5)\). (English) Zbl 0518.10040

Approximations diophantiennes et nombres transcendants, Colloq. Luminy/Fr. 1982, Prog. Math. 31, 47-66 (1983).

MSC:

11J81 Transcendence (general theory)
14H52 Elliptic curves
11F06 Structure of modular groups and generalizations; arithmetic groups