Eisenstein cohomology for congruence subgroups of SO(n,2)
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cohomologyeisensteinalgebraiccongruencesubgroupsautomorphicclassesconnected
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The automorphic cohomology of a connected reductive algebraic group defined over Q decomposes as a direct algebraic sum of cuspidal and Eisenstein cohomology. In the present paper we construct regular Eisenstein cohomology classes for congruence subgroups of a rational form G of Q-rank 2 of SO(n,2).
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