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TorosFanny / my_Coq_experiment Public

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my_Coq_experiment

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not_not (not_not_P -> P).v

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not_not (not_not_P -> P).v

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Theorem nnnnn : forall (P : Prop), ~~(~~P -> P).

Proof.

(* unfold not.

intros.

apply H.

intros. *)

tauto.

(* intuition.*)

Qed.

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