Suppose P(x, y) is some binary predicate defined on a very small domain of discourse: just the integers 1, 2, 3, and 4. For each of the 16 pairs of these numbers, P(x, y) is either true or false, according to the following table (x values are rows, y values are columns). 1 2 3 4 1 T F F F T F 2 F T 3 тт тт 4 F F F F For example, P(1,3) is false, as indicated by the F in the first row, third column. Use the table to decide whether the following statements are true or false. (a) Vx3yP(x, y).

Suppose P(x, y) is some binary predicate defined on a very small domain of discourse: just the integers 1, 2, 3, and 4. For each of the 16 pairs of these numbers, P(x, y) is either true or false, according to the following table (x values are rows, y values are columns). 1 2 3 4 1 T F F F T F 2 F T 3 тт тт 4 F F F F For example, P(1,3) is false, as indicated by the F in the first row, third column. Use the table to decide whether the following statements are true or false. (a) Vx3yP(x, 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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