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Theorem is_subgroup.mul_mem_cancel_left

Modification history

2020-06-09 20:16
src/deprecated/subgroup.lean
refactor(group_theory/subgroup): swap `mul_mem_cancel_left/right` (#3011) …
Modified is_subgroup.mul_mem_cancel_leftView on Github →
2020-06-01 23:39
src/deprecated/subgroup.lean
chore(group_theory/sub*): move unbundled submonoids and subgroups to `deprecated` (#2912) …
Modified is_subgroup.mul_mem_cancel_leftView on Github →
2018-04-10 13:02
group_theory/subgroup.lean
refactor(algebra): move is_submonoid to group_theory and base is_subgroup on is_submonoid
Added is_subgroup.mul_mem_cancel_leftView on Github →