almost-periodic function

almost-periodic function

[′ȯl‚mōst ‚pir·ē′äd·ik ′fəŋk·shən]
(mathematics)
A continuous function f (x) such that for any positive number ε there is a number M so that for any real number x, any interval of length M contains a nonzero number t such that | f (x + t) -f (x)|<>
References in periodicals archive ?
Li, Composition of pseudo almost-periodic functions and semilinear differential equations.