Liouville number

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Liouville number

[′lyü‚vēl ‚nəm·bər]
(mathematics)
An irrational number x such that for any integer n there exist integers p and q, with q greater than 1, for which the absolute value of x- (p / q) is less than 1/ q n .
References in periodicals archive ?
Ellis, 1962, 1970) without including affective or behavioural correlates of irrationality as in most other irrationality measures (cf.