lean4-htt/tests/lean/run/inductionTacticBug.lean
2020-10-26 11:35:54 -07:00

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def ex {α} : Subsingleton (Squash α) := Subsingleton.intro $ by
intro a b
induction a using Squash.ind
induction b using Squash.ind
apply Quot.sound
exact trivial