Chapter 1 - Section 1.3 - The Real Numbers - Exercise Set - Page 43: 100

The set of integers is {... , -4, -3, -2, -1,0, 1, 2, 3, 4,...}

The set of integers contains the counting numbers (the natural numbers), the number zero, and negatives of the natural numbers. The set of natural numbers is { 1, 2, 3, 4, 5, ... } . The set of whole numbers is { 0, 1, 2, 3, 4, 5, ... } The set of integers is {... , -4, -3, -2, -1,0, 1, 2, 3, 4,...}