diff options
Diffstat (limited to 'theories/Init/Specif.v')
| -rw-r--r-- | theories/Init/Specif.v | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/theories/Init/Specif.v b/theories/Init/Specif.v index 4f642a73e..2244e1b9a 100644 --- a/theories/Init/Specif.v +++ b/theories/Init/Specif.v @@ -115,6 +115,9 @@ Proof. destruct 1 as (x,H); exists x; trivial. Defined. Lemma sigT_of_sig : forall (A:Type) (P:A->Prop), sig P -> sigT P. Proof. destruct 1 as (x,H); exists x; trivial. Defined. +Coercion sigT_of_sig : sig >-> sigT. +Coercion sig_of_sigT : sigT >-> sig. + (** [sumbool] is a boolean type equipped with the justification of their value *) |