For each of the following sets, determine whether 2 is an element of that set. a) {x e R|x is an integer greater than 1} b) {x e R|x is the square of an integer} c) {2,{2}} e) {{2},{2,{2}}} d) {{2},{{2}}} f) {{{2}}}

For each of the following sets, determine whether 2 is an element of that set. a) {x e R|x is an integer greater than 1} b) {x e R|x is the square of an integer} c) {2,{2}} e) {{2},{2,{2}}} d) {{2},{{2}}} f) {{{2}}}

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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Concept explainers

Predicates

A predicate is a function defined with set of variables, which returns the result True or False. The output of a predicate is a Boolean value as a response when given a set of parameters:

Question

7. For each of the following sets, determine whether 2 is an
element of that set.
a) {x e R|x is an integer greater than 1}
b) {x e R|x is the square of an integer}
c) {2,{2}}
e) {{2},{2,{2}}}
d) {{2},{{2}}}
f) {{{2}}}
9. Determine whether each of these statements is true or
false.
a) 0 € Ø
c) {0} CØ
e) {0} € {0}
g) {Ø} C {Ø}
b) ØE {0}
d) ØC {0}
f) {0} C {0}

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