Commit 2022-04-11 11:52 171e2aa2

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feat(group_theory/group_action/basic): A quotient_action induces an action on left cosets (#13283) A quotient_action induces an action on left cosets.

Estimated changes

Modified src/group_theory/group_action/basic.lean

modified theorem mul_action.quotient.smul_coe

modified theorem mul_action.quotient.smul_mk

Modified src/linear_algebra/alternating.lean