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Proofgold Proof

pf
Let x0 of type ι be given.
Assume H0: nat_p x0.
Let x1 of type ο be given.
Assume H1: ∀ x2 . and (x2omega) (equip x0 x2)x1.
Apply H1 with x0.
Apply andI with x0omega, equip x0 x0 leaving 2 subgoals.
Apply nat_p_omega with x0.
The subproof is completed by applying H0.
The subproof is completed by applying equip_ref with x0.