Real numbers, numerical sets

There are several sets of numbers, which will be discussed below.

The set of real numbers

Effect .

Rational and irrational numbers form the real numbers. They are numbers that can be represented in the form of infinite decimal fractions.

The set of Complex numbers

Effect .

It is numbers of the form , where ; is the imaginary unit.

The set of Rational numbers

Effect .

Combining whole numbers with a decimal, get a rational number

Rational numbers can be represented in the form of irreducible fraction , where integer is a natural number written as infinite periodic decimal fractions).

The set of Irrational numbers

They are numbers that can be written in the form of an infinite non-periodic decimal fractions.

The set of integers

Effect .

Include natural numbers, their opposites numbers (negative) and the number .

The set of natural numbers

Effect .

They are positive integers.

Fractional numbers

It's a numbers composed of integer fractions of a unit.

— common fractions; — decimals

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