Natural Deduction (8 points each): Provide proofs for the following arguments. You may use both primitive and derived ru
Posted: Thu Jul 07, 2022 2:19 pm
Natural Deduction (8 points each): Provide proofs for thefollowing arguments. You mayuse both primitive and derived rules of inference.
20. (∀x)~Rx(∃z)[Pz ⊃ (∀y)(Py ⊃ Ry)]∴~(∀x)Px
20. (∀x)~Rx(∃z)[Pz ⊃ (∀y)(Py ⊃ Ry)]∴~(∀x)Px