(2)PD+ derivation proofs: (x)((Cx & ~(y)Pyx) Ox), Ca, (z)~Pza Oa ...

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(2)PD+ derivation proofs:

(∀x)((Cx & ~(∃y)Pyx) ⊃ Ox), Ca, (∀z)~Pza ⊢ Oa

Posted Date: Aug 22, 2020 11:31 PM

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