Oblomkov–Yun quasi-split extension conjecture
Oblomkov–Yun quasi-split extension conjecture
Let be a quasi-split generic group, and let the local systems, perverse filtrations, rational DAHA actions, and braid-group actions be defined as in the split case. Oblomkov–Yun's quasi-split extension conjecture. The constructions and the invariant-simple-module theorem for split should extend to quasi-split , while retaining the further stated properties of the perverse filtration. This would extend the affine-Springer and rational-DAHA picture beyond split groups; the supplied text gives no resolution status.
Sources & referencesView supporting material
Primary source
Minh-Tâm Quang Trinh and Ting Xue, “Level-Rank Dualities from Φ-Cuspidal Pairs and Affine Springer Fibers”, arXiv:2311.17106 (2025).
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