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(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

¬¬p ↔r)
((b + d-) ← (bv d))
¬((¬r V (r^¬p)) ↔ ¬¬¬¶)

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