The domain of discourse for this problem is a group of three people who are working on a project. To make notation easier, the people are numbered 1, 2. 3. The predicate M(r, y) indicates whether x has sent an email to y, so M(2, 3) is read Person 2 has sent an email to person 3." The table below shows the value of the predicate M(r. y) for each (r, y) pair. The truth value in row r and column y gives the truth value for M(r. y). ALI Determine If the quantified statement is true or false. Justify your an- Swer. (a) VarVylr wl M(r. y)) (b) Vr3y M(x. y) (e) 3r vy M(r. y)

The domain of discourse for this problem is a group of three people who are working on a project. To make notation easier, the people are numbered 1, 2. 3. The predicate M(r, y) indicates whether x has sent an email to y, so M(2, 3) is read Person 2 has sent an email to person 3." The table below shows the value of the predicate M(r. y) for each (r, y) pair. The truth value in row r and column y gives the truth value for M(r. y). ALI Determine If the quantified statement is true or false. Justify your an- Swer. (a) VarVylr wl M(r. y)) (b) Vr3y M(x. y) (e) 3r vy M(r. 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

Section: Chapter Questions

Problem 1PE

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