lean4-htt/tests/lean/run/rewriter17.lean
2016-06-10 18:29:41 -07:00

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Text

exit
open nat
definition foo [irreducible] (x : nat) := x + 1
example (a b : nat) (H : foo a = b) : a + 1 = b :=
begin
rewrite ↓foo a,
exact H
end