Compatibility of cyclic base change with semisimple local Langlands parameters
Compatibility of cyclic base change with semisimple local Langlands parameters
Let be an extension, let be cyclic, and let be the conjectural cyclic base-change map on representations of . Let and denote the semisimple local Langlands parametrizations. Compatibility conjecture. For every , the semisimple parameter of each base change satisfies
This predicts that cyclic base change restricts Weil-group parameters as expected. It depends on the existence of the base-change structure and is presented as a conjectural property rather than a theorem.
Sources & referencesView supporting material
Primary source
Michael Harris, “Local Langlands correspondences”, arXiv:2205.03848 (2022).
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