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What are the symbols of number sets?
Commonly used number set symbols: natural number set, positive integer set, integer set, rational number set and real number set are respectively:

1 and natural number set are nonnegative integer sets. The set is called natural number set, and it is recorded as n;

2. The set of all positive integers is called positive integer set, and it is denoted as N*, Z+ or n+;

3. The set composed of all integers is called integer set, and is denoted as z;

4. The set of all rational numbers is called the set of rational numbers, which is denoted as Q;

5. The set of all real numbers is called the set of real numbers, which is denoted as R. ..

Extended data:

1, the set of all nonnegative integers is usually called the nonnegative integer set (or natural number set). Non-negative integer sets include natural numbers such as 0, 1, 2 and 3. Mathematically, non-negative integer sets are represented by the bold capital letter "n". Non-negative integers include positive integers and zeros. A set of nonnegative integers is a countable set.

2. A collection refers to a collection of concrete or abstract objects with certain attributes. These objects are called elements of a set, and a number set is a number set. The range of set is greater than that of number set, and number set is just one kind of set. What belongs to a number set must belong to a set, and what belongs to a set is not necessarily a number set.

3. Other episodes of Symbol Set:

(1) The set of all real numbers is called the real number set, and it is recorded as r;

(2) The set of all imaginary numbers is called the imaginary number set, and it is denoted as I;

(3) The set of complex numbers composed of all real numbers and imaginary numbers is called complex number set, and it is recorded as C. ..

References:

Baidu Encyclopedia _ Number Set