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We prove some K-theoretic descent results for finite group actions on stable -categories, including the p-group case of the Galois descent conjecture of Ausoni-Rognes. We also prove vanishing results in accordance with Ausoni-Rognes's redshift philosophy: in particular, we show that if R is an E_-ring spectrum with Lₓ (₍) R=0, then Lₓ (₍+₁) K (R) =0. Our key observation is that descent and vanishing are logically interrelated, permitting to establish them simultaneously by induction on the height.
Clausen et al. (Tue,) studied this question.