Finite Field
30-sec diagnosis
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Declaration

imp_chain4

Mathlib.Logic.Prop

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 (P : Prop), forall (Q : Prop), forall (R : Prop), forall (S : Prop), forall (pq : forall (p : P), Q), forall (qr : forall (q : Q), R), forall (rs : forall (r : R), S), forall (p : P), S

Proof term

fun P => fun Q => fun R => fun S => fun pq => fun qr => fun rs => fun p => rs (qr (pq p))