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17.636  Articles
1 of 1.765 pages  |  10  records  |  more records»
The sufficient conditions under which the Fourier integral and conjugate Fourier integral are Voronoi-summable are obtained.

The theorem on the degree of approximation to continuous function f(x)?L(-8;8)f(x) \in L(-\infty; \infty) by Voronoi means of its Fourier integral is proved.

The theorem on the degree of approximation to a function f(x)?L(-8;8)f(x) \in L(-\infty; \infty) by Voronoi means of its Fourier integral, as well as a theorem on the degree of approximation to a function g(x)=1p8?0f(x+t)-f(x-t)tdtg(x) = \frac{1}{\pi} \in... see more

In this paper the author proves a theorem on the absolute Voronoi summability of a factored Fourier integral.

En esta investigación se caracteriza la r-nuclearidad de operadoresintegrales de Fourier en espacios de Lebesgue. Las nociones de traza nuclear y operador nuclear sobre espacios de Banach son conceptos análogos a aquellas de traza espectral y de operador ... see more

When imaging maneuvering targets with inverse synthetic aperture ladar (ISAL), dispersion and Doppler frequency time-variation exist in the range and cross-range echo signal, respectively. To solve this problem, an ISAL imaging algorithm based on integral... see more

The necessary and sufficient conditions, in terms of Fourier transforms ˆf\hat{f} of functions f?L1(R)f \in L^1(\mathbb{R}), are obtained for ff to belong to the Lipschitz classes H?(R)H^{\omega}(\mathbb{R}) and h?(R)h^{\omega}(\mathbb{R}).

The necessary and sufficient conditions in terms of Fourier transforms ˆf\hat{f} of functions f?L1(R)f\in L^1(\mathbb{R}) are obtained for ff to belong to the Lipschitz classes H?,aC(R)H_C^{\omega, \alpha}(\mathbb{R}) and h?,aC(R)h_C^{\omega, \alpha}(\mat... see more

The necessary and sufficient conditions in terms of Fourier transforms ˆf\hat{f} of functions f?L1(R)f\in L^1(\mathbb{R}) are obtained for ff to belong to the Lipschitz classes H?(R)H^{\omega}(\mathbb{R}), h?(R)h^{\omega}(\mathbb{R}).

1 of 1.765 pages  |  10  records  |  more records»