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most citedl-Adic representations associated to modular forms over imaginary quadratic fields

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math.NT2006★ 16 cited

Denominators of Eisenstein cohomology classes for GL_2 over imaginary quadratic fields

Tobias Berger

We study the arithmetic of Eisenstein cohomology classes (in the sense of G. Harder) for symmetric spaces associated to GL_2 over imaginary quadratic fields. We prove in many cases…