Proofgold Proof

pf

Let x0 of type ι be given.

Assume H0: ordinal x0.

Let x1 of type ο be given.

Assume H1: ∀ x2 . and (ordinal x2) (1beb9.. x2 x0) ⟶ x1.

Apply H1 with x0.

Apply andI with ordinal x0, 1beb9.. x0 x0 leaving 2 subgoals.

The subproof is completed by applying H0.

Apply unknownprop_e9e7859de6407ac534393134c6baa6d21f37ec1709d7126bcb1293f7feedcd5f with x0.

The subproof is completed by applying H0.

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