Compact Fourier transform compatibility for pure inner twists
Compact Fourier transform compatibility for pure inner twists
Let be a connected reductive -split group. For a unipotent element , a compact pair , and a maximal compact open subgroup of , let denote parahoric restriction and let denote the corresponding nonabelian Fourier transform. Compact Fourier transform compatibility conjecture. There \exists a root of unity such that
This predicts compatibility between the dual compact nonabelian Fourier transform on compact representations and the finite reductive-group Fourier transform after parahoric restriction. The supplied text gives no resolution status.
Sources & referencesView supporting material
Primary source
Anne-Marie Aubert, Dan Ciubotaru and Beth Romano, “A nonabelian Fourier transform for tempered unipotent representations, II”, arXiv:2606.14485 (2026).
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