(p + rר)= ((p + qר) →→ (p^q)) (qריר + ((pר \/ r V (r−))→
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
Section: Chapter Questions
Problem 1PE
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Question
Give the list of subformulas for each of the following strings
Transcribed Image Text:¬¬p ↔r)
((b + d-) ← (bv d))
¬((¬r V (r^¬p)) ↔ ¬¬¬¶)
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