**Rational number** — In mathematics, a rational number is any number that can be expressed as the quotient or fraction a/b of two integers, with the denominator b not equal to zero. Since b may be equal to 1, every integer is a rational number. The set of all… … Wikipedia

**rational number** — noun an integer or a fraction • Syn: ↑rational • Hypernyms: ↑real number, ↑real • Hyponyms: ↑fraction * * * noun : an integer or the quotient of two integers (as 2/3) * … Useful english dictionary

**rational number** — number which can be represented as a quotient of two whole numbers (Mathematics) … English contemporary dictionary

**rational number** — noun A real number that can be expressed as the ratio of two integers. Ant: irrational number … Wiktionary

**rational number** — noun Date: 1879 a number that can be expressed as an integer or the quotient of an integer divided by a nonzero integer … New Collegiate Dictionary

**rational number** — See number … Philosophy dictionary

**rational number** — ra′tional num′ber n. math. a number that can be expressed exactly by a ratio of two integers • Etymology: 1900–05 … From formal English to slang

**rational number** — /ræʃnəl ˈnʌmbə/ (say rashnuhl numbuh) noun a number which can be expressed as the quotient of two integers, when the denominator is not zero … Australian-English dictionary

**Rational** — may refer to: * Rationality, a concept of reason * Rational number, a number that can be expressed as a ratio of two integers * Rational function, a mathematical function which can be written as the ratio of two polynomial functions * Rational… … Wikipedia

**Number theory** — A Lehmer sieve an analog computer once used for finding primes and solving simple diophantine equations. Number theory is a branch of pure mathematics devoted primarily to the study of the integers. Number theorists study prime numbers (the… … Wikipedia