Computer Sciences > Gate 2017 Set-1 > Pridicate Calculus
Consider the first-order logic sentence

F: ∀ x (∃ y R(x,y)).

Assuming non-empty logical domains, which of the sentences below are implied by F?

I. ∃y (∃x R(x,y))
II. ∃y (∀x R(x,y))
III. ∀y (∃x R(x,y))
IV. ∼∃x (∀y R(x,y))
A
II only
B
IV only
C
I and IV only
D
II and III only

Explanation

Correct : Pridicate Calculus

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