convolution

In these cases, owing to the properties of the convolution integral, the entanglement growth saturates at a time

A rather difficult method for calculating the convolution integrals based on representations of the factors by step-functions, was given by I.

Convergence in variation and rates of approximation for Bernstein-type polynomials and singular convolution integrals. Analysis (Munich), 2003, 23, 299-340.

Later, the often ray-tube integration called approach was employed for 2D ISAR image generation [8] and it was even recognized that the resulting convolution integrals can be efficiently evaluated by Fast Fourier Transform (FFT) based fast convolutions [9].

A state-space description of a LTI-TDS can be provided by the set of FDEs in the form (1) where x [member of][[??].sup.n] is a vector of state variables, u [member of] [[??].sup.m] stands for a vector of inputs, y [member of] [[??].sup.l] represents a vector of outputs, [A.sub.i], A([tau]), [B.sub.i], B([tau]), C, [H.sub.i] are real matrices of compatible dimensions, sums with 0 [less than or equal to] [[eta].sub.i] [less than or equal to] L stand for lumped (point-wise) delays and convolution integrals express distributed delays.