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Commit 2022-06-29 20:39 1116684d

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chore(set_theory/game/pgame): golf various theorems about relabellings (#15054)

Estimated changes

Modified src/set_theory/game/basic.lean

Modified src/set_theory/game/pgame.lean

modified theorem pgame.relabelling.equiv

modified theorem pgame.relabelling.ge

modified def pgame.relabelling.is_empty

modified theorem pgame.relabelling.le

modified def pgame.relabelling.refl

modified def pgame.relabelling.restricted

modified def pgame.relabelling.symm

modified def pgame.relabelling.trans

modified def pgame.restricted.trans