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Declaration
iff_symm
Mathlib.Logic.Iff
Packages
2
Module
63
Theorems
750
Declarations
1016
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Statement
forall (P : Prop), forall (Q : Prop), forall (h : Iff P Q), Iff Q PProof term
fun P => fun Q => fun h => fun (R : Prop) => fun (mk : forall (forward : forall (q : Q), P), forall (backward : forall (p : P), Q), R) => h R (fun (forward : forall (p : P), Q) => fun (backward : forall (q : Q), P) => mk backward forward)