Mathlib v3 is deprecated. Go to Mathlib v4

Theorem mul_action.sum_card_fixed_by_eq_card_orbits_mul_card_group

Modification history

2022-06-29 12:27
src/group_theory/group_action/basic.lean
chore(group_theory/group_action/basic): split file (#15044) …
Modified mul_action.sum_card_fixed_by_eq_card_orbits_mul_card_groupView on Github →
2021-09-02 19:07
src/group_theory/group_action/basic.lean
feat(group_theory/group_action/basic): class formula, Burnside's lemma (#8801) …
Added mul_action.sum_card_fixed_by_eq_card_orbits_mul_card_groupView on Github →