What is number?

Number

A number is a mathematical object used to count, label, and measure. In mathematics, the definition of number has been extended over the years to include such numbers as zero, negative numbers, rational numbers, irrational numbers, and complex numbers.

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Famous quotes containing the word number:

    It is not the number of years we have behind us, but the number we have before us, that makes us careful and responsible and determined to find out the truth about everything.
    George Bernard Shaw (1856–1950)

    Among a hundred windows shining
    dully in the vast side
    of greater-than-palace number such-and-such
    one burns
    these several years, each night
    as if the room within were aflame.
    Denise Levertov (b. 1923)

    Mining today is an affair of mathematics, of finance, of the latest in engineering skill. Cautious men behind polished desks in San Francisco figure out in advance the amount of metal to a cubic yard, the number of yards washed a day, the cost of each operation. They have no need of grubstakes.
    Merle Colby, U.S. public relief program (1935-1943)