lean4-htt/old_tests/tests/lean/584b.lean
2018-04-10 12:56:55 -07:00

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Text

section
universe variable u variable (A : Type u)
section
variables (a b : A)
variable (H : a = b)
definition tst₁ := a
#check @tst₁
variable {A}
definition tst₂ := a
#check @tst₂ -- A is implicit
lemma symm₂ : b = a := eq.symm H
#check @symm₂
end
variable (a : A)
definition tst₃ := a
#check @tst₃ -- A is explicit again
end