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Def equiv.perm.sum_congr_subgroup

Modification history

2020-12-15 10:30
src/group_theory/perm/subgroup.lean
feat(group_theory/perm/basic): Bundle sigma_congr_right and sum_congr into monoid_homs (#5301) …
Deleted equiv.perm.sum_congr_subgroupView on Github →
2020-12-12 07:17
src/group_theory/perm/subgroup.lean
feat(group_theory/perm/subgroup): Add some simple subgroups of permutations (#5279)
Added equiv.perm.sum_congr_subgroupView on Github →