Negative integer set: -789

Integer set: 1,-789,325

Rational number set: 1, 0,-789,325

Positive rational number set: 1, 0 0. 10/0,325.

Negative rational number set: -789

Natural number set: 1, 325

Number set type

Some commonly used number sets in mathematics and their representations;

The set of all positive integers is called positive integer set, which is denoted as N*, Z+ or n+;

The set of all negative integers is called negative integer set, which is denoted as z-;

The set composed of all nonnegative integers is called nonnegative integer set (or natural number set), and is denoted as n;

The set of all integers is called an integer set, and Z is recorded.