iff_trans

Mathlib.Logic.Iff

Packages

Module

Theorem

750

Declarations

1016

信頼境界外の sidecar

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Statement

forall (P : Prop), forall (Q : Prop), forall (R : Prop), forall (hpq : Iff P Q), forall (hqr : Iff Q R), Iff P R

Proof term

fun P => fun Q => fun R => fun hpq => fun hqr => fun (S : Prop) => fun (mk : forall (forward : forall (p : P), R), forall (backward : forall (r : R), P), S) => hpq S (fun (pq : forall (p : P), Q) => fun (qp : forall (q : Q), P) => hqr S (fun (qr : forall (q : Q), R) => fun (rq : forall (r : R), Q) => mk (fun (p : P) => qr (pq p)) (fun (r : R) => qp (rq r))))

Constants

Mathlib.Logic.Iff.Iff

Interface hash: sha256:2adc7b81d1a44ca853820a2d3ff7c7a4835689786f67097640ec93685cf2fc9c