Sets Part I The Basics

This document provides an introduction to sets and the real number system. It defines key concepts such as elements, membership, cardinality, types of sets including finite, infinite, empty, subsets, proper subsets, improper subsets, universal sets, power sets, and set relations like equal, equivalent, joint, and disjoint sets. Examples are provided to illustrate each concept. The last section provides a quiz to test understanding of basic set concepts covered.