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Class ORDER A := Order {
LEQ : A -> A -> bool;
leqRefl: forall x, true = LEQ x x
}.
Section XXX.
Variable A:Type.
Variable (O:ORDER A).
Definition aLeqRefl := @leqRefl _ O.
Lemma OK : forall x, true = LEQ x x.
Proof.
intros.
unfold LEQ.
destruct O.
clear.
Fail apply aLeqRefl.
Abort.
|
