The Satake compatibility conjecture for the spectral action

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Let J\boldsymbol{J} be the algebra acting on the compactly supported cohomology of the Shimura variety, and let \operatorname{H}_c(\operatorname{Sh}_{\mu,\overline{\mathbb{F}}_v,\mathbb{Q}_\ell) denote that cohomology. The classical Satake isomorphism identifies J\boldsymbol{J} with the relevant spherical Hecke algebra. Satake compatibility conjecture. Under the Satake isomorphism, the action of J\boldsymbol{J} in the preceding theorem coincides with the usual Hecke algebra action on

H⁡c∗(Sh⁡μ,F‾v,Qℓ).\operatorname{H}_c^*(\operatorname{Sh}_{\mu,\overline{\mathbb{F}}_v},\mathbb{Q}_\ell).

This is presented as the analogue of V. Lafforgue's S=TS=T theorem and would identify the geometric spectral action with the classical Hecke action. The source gives no resolution.

References

Primary source

Liang Xiao and Xinwen Zhu, “Cycles on Shimura varieties via geometric Satake”, arXiv:1707.05700 (2017).

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