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Nov 23, 2023 at 14:45 vote accept RFZ
Nov 23, 2023 at 14:45 comment added RFZ Thank you for your answer! A nice and simple example.
Nov 23, 2023 at 6:15 comment added Seva @RFZ: Correct - $(N/2)^\perp$ is the set of all characters $\chi$ such that $\chi(N/2)=1$.
Nov 23, 2023 at 3:41 comment added RFZ I apologize for the delayed response to your answer. Unfortunately, I did not have the opportunity to read it until now. So, if I understand correctly, $\Gamma$ is the set of all characters $\chi$ such that $\chi(N/2) = 1$, is that right? I am a bit confused by the notation $\Gamma \subset (N/2)^{\perp}$.
Oct 11, 2023 at 6:05 history edited Seva CC BY-SA 4.0
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Oct 8, 2023 at 6:25 history answered Seva CC BY-SA 4.0