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Jan 9, 2023 at 23:24 comment added Marsault Chabat Ok thank you very much!
Jan 9, 2023 at 22:11 comment added Peter Humphries No, you can have two automorphic representations that are quadratic twists of one another and have the same local components at 50% of their places. And no, the weight of a discrete series is not contained in the central character, except that there is a compatibility $\omega(-1) = (-1)^k$.
Jan 9, 2023 at 21:17 comment added Marsault Chabat Hi Peter, I have a question on your answer of 1). If I assume that the two cuspidal representations also share one of (resp almost all, all) their principal series component? Can we then say that they are the same? Also, the weight $k$ you're talking about is contained in the $\omega$ character right?
Jan 6, 2019 at 18:59 vote accept Wenzhe
Jan 6, 2019 at 4:37 history answered Peter Humphries CC BY-SA 4.0