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Consider the Following Domain, Assignment of Objects in the Domain \lor

Question 243

Multiple Choice

consider the following domain, assignment of objects in the domain, and assignments sets to predicates.
Domain = {Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto}
a = Mercury b = Jupiter c = Saturn d = Pluto
Mx = {Mercury, Mars}
Px = {Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune}
Cxy = {, , , , , , , , , ,
, , , , , , , , , , , , , , , , , , , , , , , , , }
-Given the customary truth tables, which of the following theories is modeled by the above interpretation?


A) (∀x) (Px ⊃ Mx)
~(∃x) Px
(∀x) (∀y) [(Px • Py) ⊃ Cxy]
B) (∀x) (Mx ≡ Px)
~(∀x) Mx (∀x) [(∀y) Cxy ⊃ Py]
C) (∀x) (Mx \lor Px)
~(∃x) Mx
(∀x) [Px ⊃ ~(∀y) (Py ⊃ Cxy) ]
D) (∀x) (~Mx \lor Px)
~(∀x) (Px
(∀x) [Px ⊃ (∀y) (Py ⊃ Cxy) ]
E) (∀x) (Mx ⊃ Px)
∼(∀x) Px
(∀x) [∼Px ⊃ (∀y) (Py ⊃ Cyx) ]

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