On essentially cuspidal noncongruence subgroups of PSL(2,Z
نویسندگان
چکیده
منابع مشابه
Modular Forms for Noncongruence Subgroups
The study of modular forms for congruence subgroups of SL2(Z) has been one of the central topics in number theory for over one century. It has broad applications and impact to many branches of mathematics. Langlands’ program is a vast generalization of this subject from representation-theoretic point of view. The most recent highlight is the proof of the Taniyama-Shimura-Weil modularity conject...
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The l-adic parabolic cohomology groups attached to noncongruence subgroups of SL2(Z) are finite-dimensional l-adic representations of Gal(Q/K) for some number field K. We exhibit examples (with K = Q) for which the primitive parts give Galois representations whose images are open subgroups of the full group of symplectic similitudes (of arbitrary dimension). The determination of the image of th...
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ژورنال
عنوان ژورنال: Journal of Functional Analysis
سال: 1990
ISSN: 0022-1236
DOI: 10.1016/0022-1236(90)90064-r