0

Zero is the integer denoted 0 that, when used as a counting number, means that no objects are present. It is the only integer (and, in fact, the only real number) that is neither negative nor positive. A number which is not zero is said to be nonzero. A root of a function f is also sometimes known as "a zero of f." The Schoolhouse Rock segment "My Hero, Zero" (Multiplication Rock, Season 1, Episode 2, 1973) extols the virtues of zero with such praises as, "My hero, zero Such a funny little hero But till you came along We counted on our fingers and toes Now you're here to stay And nobody really knows How wonderful you are Why we could never reach a star Without you, zero, my hero How wonderful you are."

Airy function zeros | approximate zero | Bessel function zeros | constant problem | division by zero | fallacy | identically zero | naught | negative | nonnegative | nonzero | positive | power | Richardson's theorem | root | uniformity conjecture | vanish identically | vanishing | zero divisor | zerofree | zero matrix | zero-sum game