Theorem FreeProduct.lift_injective_of_ping_pong

Modification history

2023-07-31 14:06
Mathlib/GroupTheory/CoprodI.lean
refactor: rename `FreeProduct` to `Monoid.CoprodI` (#6055)
Deleted FreeProduct.lift_injective_of_ping_pongView on Github →
2023-03-23 17:36
Mathlib/GroupTheory/FreeProduct.lean
feat: port GroupTheory.FreeProduct (#2979)
Added FreeProduct.lift_injective_of_ping_pongView on Github →