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Declaration
eq_refl_apply_twice
Mathlib.Logic.Eq
Packages
2
Module
63
Theorems
750
Declarations
1016
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Statement
forall (A : Sort u), forall (f : forall (x : A), A), forall (x : A), @Eq.{u} A (f (f x)) (f (f x))Proof term
fun A => fun f => fun x => @Eq.refl.{u} A (f (f x))