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mem_fixingSubgroup_compl_iff_movedBy_subset
Modification history
2024-02-12 10:30
Mathlib/GroupTheory/GroupAction/FixingSubgroup.lean
feat(GroupTheory/GroupAction): new `FixedPoints` module with a few basic properties of `fixedBy` (#9477) …
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mem_fixingSubgroup_compl_iff_movedBy_subset
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