Finite Field
30-sec diagnosis
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Declaration

apply_twice

Mathlib.Logic.Basic

Packages

2

Module

63

Theorems

750

Declarations

1016

Untrusted sidecar

Source text and display overlays are presentation metadata. The signed certificate and checker result are the trusted evidence.

Statement

forall (A : Type), forall (f : forall (x : A), A), forall (x : A), A

Proof term

fun A => fun f => fun x => f (f x)