aperiodic

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a·per·i·od·ic

(ā-pēr'ē-od'ik),
Not occurring periodically.

a·per·i·od·ic

(ā'pēr-ē-od'ik)
Not occurring periodically.

aperiodic

(ā″pēr″ē-od′ik) [ ¹an- + periodic]
Occurring other than periodically.

a·per·i·od·ic

(ā'pēr-ē-od'ik)
Not occurring periodically.
References in periodicals archive ?
The function {s + 1} = {s} is a periodic function of s modulo 1.
t]([theta]) = u(t + [theta]), [theta] [member of] R, f : R x X x PAP(X) [right arrow] X, PAP(X) is the set of all pseudo almost periodic functions from R to X and the family {A(t) : t [member of] R} of operators in X generates an exponentially stable evolution system {U(t, s), t [greater than or equal to] s}.
The Fourier transform f^ of such periodic functions is a Fourier series, [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII.
infinity]] can be expressed as a weighted sum of periodic functions of the form cos([lambda]t) and sin([lambda]t): (1)
Besicovitch, Almost periodic functions, Dover, New York, 1954.
Here, [delta] (x) denotes an unspecified tiny periodic function of period 1.
By the classical theory, F is an usual almost periodic function.
2](x) is a periodic function of period 1, mean zero and small amplitude, which is given by the Fourier series
In the case of approximation of periodic functions, S.
They begin with such preliminaries as evolution equations and semigroups of linear operators and almost periodic functions.
Chapters cover areas including regularity of linear methods of summation of Fourier series, saturation of linear methods, classes of periodic functions, best approximations in the spaces C and L, interpolation, and approximation of Cauchy- type integrals.
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