
mathematicsa fundamental concept, representing quantities or values
A number is a fundamental concept in mathematics, representing quantities or values. Typically, numbers are represented using the decimal number system and are organized into different sets representing different types of numbers. Read more…
A set of numbers is a collection of numbers grouped together based on specific properties. Common sets of numbers include the natural numbers, integers, rational numbers, real numbers, and complex numbers.
The set of natural numbers, denoted as ℕ, includes all positive integers starting from 0. In some definitions, the set starts from 1 instead of 0.
The set of rational numbers, denoted as ℚ, can be defined by the quotient of two numbers belonging to the set of integers, where the divisor is nonzero.
The set of real numbers, denoted as ℝ, includes all rational and irrational numbers. It represents the entire continuum of possible number values from negative infinity to positive infinity.
The set of complex numbers contains all possible complex numbers. Each complex number has a real part and an complex part.