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The correct determinant exponent of the weight $k$-operator for defining Hecke operators/ade...

This is a question which has no "right" answer. A posh interpretation of the choice of exponent is that a Hecke eigenform $f$ determines an equivalence class of irreducible representations $\Pi = \big …
David Loeffler's user avatar
5 votes

Automorphic quotients for inner forms or $GSp(4)$

As you write it, this group always has a non-trivial parabolic subgroup (the Siegel subgroup, given by the intersection of $GU_D$ with upper-triangular matrices in $GL_2(D)$); and hence its symmetric …
David Loeffler's user avatar