The local Langlands parametrization conjecture for disconnected even orthogonal groups
The local Langlands parametrization conjecture for disconnected even orthogonal groups
Let be a -adic symplectic group or split special orthogonal group, and in the special even orthogonal case let be the corresponding full even orthogonal group. Let be the quotient of the parameter set by -conjugation, and define using the component-group characters . The local Langlands parametrization conjecture. There should be a bijection
This is the expected extension of the local Langlands correspondence from connected reductive groups to the disconnected full even orthogonal group; the source gives no resolution status.
Sources & referencesView supporting material
Primary source
Taiwang Deng, Chang Huang, Bin Xu and Qixian Zhao, “Relating Arthur packets of real unitary groups and p-adic symplectic and orthogonal groups”, arXiv:2603.16314 (2026).
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