Provide proofs for the following arguments. You may use both primitive and derived rules of inference. 20. (∀x)~Rx (∃z)[
Posted: Thu Jul 07, 2022 2:20 pm
Provide proofs for the following arguments. You may use bothprimitive and derived rules of inference.
20. (∀x)~Rx
(∃z)[Pz ⊃ (∀y)(Py ⊃ Ry)]
∴~(∀x)Px
21. b = c
∴ Bc ≡ Bb
20. (∀x)~Rx
(∃z)[Pz ⊃ (∀y)(Py ⊃ Ry)]
∴~(∀x)Px
21. b = c
∴ Bc ≡ Bb