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Theorem subgroup.index_eq_mul_of_le

Modification history

2021-10-19 23:43
src/group_theory/index.lean
feat(group_theory/index): Relative index (#9780) …
Deleted subgroup.index_eq_mul_of_leView on Github →
2021-09-08 06:17
src/group_theory/index.lean
feat(group_theory/index): define the index of a subgroup (#8971) …
Added subgroup.index_eq_mul_of_leView on Github →