论文信息 - Automorphic forms for subgroups of the modular group

Automorphic forms for subgroups of the modular group

The theory of theta constants with rational characteristics is developed from the point of view of automorphic functions for the principal congruence subgroups of the modular group PSL(2, ℤ). New identities are derived and particular emphasis is given to the level 3 case where a striking generalization of the classical λ-function is obtained.

Irwin Kra | Hershel M. Farkas

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