Natural numberNatural numbers can be used for counting: one apple plus two apples equals three apples.In mathematics, the natural numbers are the numbers used for counting up, starting from 0 or 1. The first few natural numbers are 0 (if included), 1, 2, 3, and so on. The terms positive integers, non-negative integers, whole numbers, and counting numbers are also used. The set of the natural numbers is commonly denoted by a bold N or a blackboard boldN{\displaystyle \mathbb {N} }.
Rational numberIn mathematics, a rational number is a number that can be expressed as the quotient or fraction p q {\displaystyle {\tfrac {p}{q}}} of two integers, a numerator p and a nonzero denominator q. For example, 3 7 {\displaystyle {\tfrac {3}{7}}} is a rational number, as is every integer (for example, − 5 = − 5 1 {\displaystyle -5={\tfrac {-5}{1}}} ).
Real numberIn mathematics, a real number is a number that can be used to measure a continuous one-dimensionalquantity such as a length, duration or temperature. Here, continuous means that pairs of values can have arbitrarily small differences. Every real number can be almost uniquely represented by an infinite decimal expansion.
Set (mathematics)In mathematics, a set is a collection of different things; the things are called elements or members of the set and are typically mathematical objects: numbers, symbols, points in space, lines, other geometric shapes, variables, functions, or even other sets. Mathematics typically does not define precisely what constitutes a "set" or "collection", because such a definition would have to be in terms of something else previously defined.
NumberUsed to count, measure, and labelSet inclusions between the natural numbers (ℕ), the integers (ℤ), the decimal fractions (𝔻), the rational numbers (ℚ), the real numbers (ℝ), and the complex numbers (ℂ)A number is a mathematical object used to count, measure, and label. The most basic examples are the natural numbers: 1, 2, 3, 4, 5, and so forth.Additive inverseIn mathematics, the additive inverse of an element x, denoted −x, is the element that when added to x, yields the additive identity. This additive identity is often the number 0 (zero), but it can also refer to a more generalized zero element. In elementary mathematics, the additive inverse is often referred to as the opposite number, or the negative of a number.
Square root of 2The square root of 2 (approximately 1.4142) is the positive real number that, when multiplied by itself or squared, equals the number 2. It may be written as 2{\displaystyle {\sqrt {2}}} or 21/2{\displaystyle 2^{1/2}}. It is an algebraic number, and therefore not a transcendental number. Technically, it should be called the principalsquare root of 2, to distinguish it from the negative number with the same property.
FractionRatio of two numbersA cake with one quarter (one fourth) removed. The remaining three fourths are shown by dotted lines and labeled by the fraction 1⁄4.A fraction (from Latin: fractus, "broken") represents a part of a whole or, more generally, any number of equal parts. When spoken in everyday English, a fraction describes how many parts of a certain size there are, for example, one-half, eight-fifths, three-quarters.
−1−10123456789→List of numbersIntegers←0102030405060708090→Cardinal−1, minus one, negative oneOrdinal−1st (negative first)Divisors1Arabic−١Chinese numeral负一，负弌，负壹Bengali−১Binary (byte)Hex (byte)In mathematics, −1 (negative one or minus one) is the additive inverse of 1, that is, the number that when added to 1 gives the additive identity element, 0. It is the negativeinteger greater than negative two (−2) and less than 0.
SubsetIn mathematics, a setA is a subset of a set Bif and only if all elements of A are also elements of B; B is then a superset of A. It is possible for A and B to be equal; if they are unequal, then A is a proper subset of B. The relationship of one set being a subset of another is called inclusion (or sometimes containment). A is a subset of B may also be expressed as B includes (or contains) A or A is included (or contained) in B. A k-subset is a subset with k elements.
Countable setMathematical set that can be enumeratedA mathematical set is countable if either it is finite or it can be put in one to one correspondence with the set of natural numbers.
Blackboard boldBlackboard bold is a style of writing bold symbols on a blackboard by doubling certain strokes, commonly used in mathematical lectures, and the derived style of typeface used in printed mathematical texts.
0Whole numberNatural number−10123456789→List of numbersIntegers←0102030405060708090→Cardinal0, zero, nought, naught, nil, "oh" ()OrdinalZeroth, noughth, 0thLatinprefixnulli-Binary02Ternary03Senary06Octal08Duodecimal012Hexadecimal016Arabic, Kurdish, Persian, Sindhi, Urdu٠Hindu numerals०Santali᱐Chinese零, 〇Burmese၀Khmer០Thai๐Assamese, Bengali০Maya numerals𝋠Morse code_ _ _ _ _0 (zero, ) is a number representing an empty quantity.
entireRelated word or term.entierRelated word or term.ZahlenRelated word or term.*As an Amazon Associate I earn from qualifying purchases.