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-rw-r--r--theories/Init/Logic.v3
1 files changed, 3 insertions, 0 deletions
diff --git a/theories/Init/Logic.v b/theories/Init/Logic.v
index 804784b30e..9251d00ff3 100644
--- a/theories/Init/Logic.v
+++ b/theories/Init/Logic.v
@@ -21,6 +21,9 @@ Inductive True : Prop :=
(** [False] is the always false proposition *)
Inductive False : Prop :=.
+(** [proof_admitted] is used to implement the admit tactic *)
+Axiom proof_admitted : False.
+
(** [not A], written [~A], is the negation of [A] *)
Definition not (A:Prop) := A -> False.