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math.RT2026
The Whittaker functional is a shifted microstalk
David Nadler, Jeremy Taylor
For a smooth projective curve and reductive group , the Whittaker functional on nilpotent sheaves on is expected to correspond to global sections of cohere…
math.RT2024
Functions on the commuting stack via Langlands duality
Penghui Li, David Nadler, Zhiwei Yun
We calculate the dg algebra of global functions on commuting stacks of complex reductive groups using tools from Betti Geometric Langlands. In particular, we prove that the ring of…