Indicate which of the following are formulas of FOL and which of those are sentences. For each formula, make sure to circle the main logical operator. For those that are not formulas, explain why they are not formulas, and for those that are formulas but not sentences, explain why they are not sentences. (a) (y = x) V P(y) (b) VXA(x) → 3ZA(x) (c) Vx(B → O(x))

Indicate which of the following are formulas of FOL and which of those are sentences. For each formula, make sure to circle the main logical operator. For those that are not formulas, explain why they are not formulas, and for those that are formulas but not sentences, explain why they are not sentences. (a) (y = x) V P(y) (b) VXA(x) → 3ZA(x) (c) Vx(B → O(x))

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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