5. Rewrite each of these statements so that no negation is to the left of a quantifier. Push all negations in as far as they will go. This means past the conditionals and biconditionals as well (a) Vr-yz (P(x,y) → ¬S(y, z))) (b) Vy-r(R(x,y) → zS(z,y))

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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5. Rewrite each of these statements so that no negation is to the left of a
quantifier. Push all negations in as far as they will go. This means past
the conditionals and biconditionals as well
(a) Vr-yaz(P(x, y) → ¬S(y, z)))
(b) Vy-x (R(x,y) →
zS(z,y))
Transcribed Image Text:5. Rewrite each of these statements so that no negation is to the left of a quantifier. Push all negations in as far as they will go. This means past the conditionals and biconditionals as well (a) Vr-yaz(P(x, y) → ¬S(y, z))) (b) Vy-x (R(x,y) → zS(z,y))
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