| + | A '''number''' is a [[mathematical]] object used in counting and [[Measure|measuring]]. A notational [[symbol]] which represents a number is called a ''numeral'', but in common usage the [[word]] number is used for both the abstract object and the symbol, as well as for the [[word]] for the number. In addition to their use in counting and measuring, numerals are often used for labels (telephone numbers), for ordering (serial numbers), and for codes (ISBNs). In mathematics, the definition of number has been extended over the years to include such numbers as [[Zero|0]], [https://en.wikipedia.org/wiki/Negative_numbers negative numbers], [https://en.wikipedia.org/wiki/Rational_numbers rational numbers], [https://en.wikipedia.org/wiki/Irrational_numbers irrational numbers], and [https://en.wikipedia.org/wiki/Complex_numbers complex numbers]. |
− | Anglo-Norman nombre, noumbre, numbre, nounbre, nunbre, numere and Old French, Middle French nombre sum, total (early 12th cent. as numbre), grammatical number (13th cent.), a (large, small) [[quantity]] (14th cent.), [[conformity]] in verse to a regular [[measure]] (1549) < classical [[Latin]] numerus sum, total, numeral, number as indicating a part or position in a series, a (large, small) quantity, a (large or small) [[group]] or collection of [[persons]] or [[things]], a class or category, number as an abstract [[concept]], the [[fact]] of being numerous, numerical calculation, arithmetic, rhythm in [[words]] or [[music]], [[Grammar|grammatical]] number, metrical foot, (plural) metrical lines, musical strains, perhaps < a suffixed ablaut variant of the same Indo-European base as ancient [[Greek]] (NOMOS n.). | + | Anglo-Norman nombre, noumbre, numbre, nounbre, nunbre, numere and Old French, Middle French nombre sum, total (early 12th cent. as numbre), grammatical number ([https://en.wikipedia.org/wiki/13th_century 13th cent.]), a (large, small) [[quantity]] ([https://en.wikipedia.org/wiki/14th_Century 14th cent.]), [[conformity]] in verse to a regular [[measure]] (1549) < classical [[Latin]] numerus sum, total, numeral, number as indicating a part or position in a series, a (large, small) quantity, a (large or small) [[group]] or collection of [[persons]] or [[things]], a class or category, number as an abstract [[concept]], the [[fact]] of being numerous, numerical calculation, arithmetic, rhythm in [[words]] or [[music]], [[Grammar|grammatical]] number, metrical foot, (plural) metrical lines, musical strains, perhaps < a suffixed ablaut variant of the same Indo-European base as ancient [[Greek]] (NOMOS n.). |
− | A '''number''' is a [[mathematical]] object used in counting and [[Measure|measuring]]. A notational [[symbol]] which represents a number is called a ''numeral'', but in common usage the [[word]] number is used for both the abstract object and the symbol, as well as for the [[word]] for the number. In addition to their use in counting and measuring, numerals are often used for labels (telephone numbers), for ordering (serial numbers), and for codes (ISBNs). In mathematics, the definition of number has been extended over the years to include such numbers as [[Zero|0]], [http://en.wikipedia.org/wiki/Negative_numbers negative numbers], [http://en.wikipedia.org/wiki/Rational_numbers rational numbers], [http://en.wikipedia.org/wiki/Irrational_numbers irrational numbers], and [http://en.wikipedia.org/wiki/Complex_numbers complex numbers].
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