نتایج جستجو برای: wiener functions

تعداد نتایج: 497805  

2007
Philippe BERTHET Zhan SHI

Let fW(t); 0 t 1g be a real-valued Wiener process, starting from 0. For a large class of functions f which may vanish at 0, we obtain the exact asymptotics, as " goes to 0, of log P(sup 0<t1 jW(t)=f(t)j < ").

2016
IRYNA EGOROVA

We show that for a Jacobi operator with coefficients whose (j + 1)’th moments are summable the j’th derivative of the scattering matrix is in the Wiener algebra of functions with summable Fourier coefficients. We use this result to improve the known dispersive estimates with integrable time decay for the time dependent Jacobi equation in the resonant case.

2000
Aurelian Bejancu

We consider the problem of semi-cardinal interpolation for polyharmonic splines. For absolutely summable data sequences, we construct a solution to this problem using a Lagrange series representation. The corresponding Lagrange functions are deened using Fourier transforms and the technique of Wiener-Hopf factorizations for semi-space lattices.

2015
IRYNA EGOROVA

We show that for a one-dimensional Schrödinger operator with a potential, whose (j + 1)-th moment is integrable, the j-th derivative of the scattering matrix is in the Wiener algebra of functions with integrable Fourier transforms. We use this result to improve the known dispersive estimates with integrable time decay for the one-dimensional Schrödinger equation in the resonant case.

Journal: :J. London Math. Society 2013
Alexander Alldridge Joachim Hilgert Martin Laubinger

We define a Fourier transform and a convolution product for functions and distributions on Heisenberg–Clifford Lie supergroups. The Fourier transform exchanges the convolution and a pointwise product, and is an intertwining operator for the left regular representation. We generalize various classical theorems, including the Paley–Wiener–Schwartz theorem, and define a convolution Banach algebra.

2011
Muhuo Liu Bolian Liu

The Wiener polarity indexWP (G) of a graph G is the number of unordered pairs of vertices {u, v} of G such that the distance of u and v is equal to 3. In this paper, we obtain the relation between Wiener polarity index and Zegreb indices, and the relation between Wiener polarity index and Wiener index (resp. hyper-Wiener index). Moreover, we determine the second smallest Wiener polarity index t...

Journal: :Proceedings of the Japan Academy, Series A, Mathematical Sciences 1983

Journal: :Image Vision Comput. 2009
Lance M. Kaplan Nasser M. Nasrabadi

This paper describes two novel Wiener-based approaches for frame-to-frame image registration. The first approach, Local Wiener Registration, incorporates the crosscorrelation between the two frames to determine the Wiener filter at each pixel location in order to predict the second frame from the first frame. The second approach, Block Wiener Registration, divides the image in nonoverlapping bl...

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