Mathlib Changelog
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2025-04-18 07:38
bab034fe
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feat: the index of the scaling of a subgroup (
#24025
) From FLT
Estimated changes
Modified
Mathlib/GroupTheory/Index.lean
added
theorem
AddSubgroup.index_smul
modified
theorem
Subgroup.index_map_eq
added
theorem
Subgroup.index_map_of_bijective