نتایج جستجو برای: bessel sequences

تعداد نتایج: 216629  

2006
JEAN-CHRISTOPHE NOVELLI

The consideration of tensor products of 0-Hecke algebra modules leads to natural analogs of the Bessel J-functions in the algebra of noncommutative symmetric functions. This provides a simple explanation of various combinatorial properties of Bessel functions.

2011
PIOTR GRACZYK JACEK MAŁECKI

Multidimensional and matrix versions of the Yamada-Watanabe theorem are proved. They are applied to particle systems of squared Bessel processes and to matrix analogues of squared Bessel processes: Wishart and Jacobi matrix processes.

In this paper, we give the spectral theory for eigenvalues and eigenfunctions of a boundary value problem consisting of the linear fractional Bessel operator. Moreover, we show that this operator is self-adjoint, the eigenvalues of the problem are real, and the corresponding eigenfunctions are orthogonal. In this paper, we give the spectral theory for eigenvalues and eigenfunctions...

Journal: :international journal of mathematical modelling and computations 0
ahmed abouelaz radouan daher loualid el mehdi morocco

n this article, we prove an lp-lq-version of morgan’s theorem for the generalized bessel transform.

2016
Xiong Li Mingbo Pu Zeyu Zhao Xiaoliang Ma Jinjin Jin Yanqin Wang Ping Gao Xiangang Luo

Non-diffracting Bessel beams, including zero-order and high-order Bessel Beams which carry orbital angular momentum (OAM), enable a variety of important applications in optical micromanipulation, sub-diffraction imaging, high speed photonics/quantum communication, etc. The commonly used ways to create Bessel beams, including an axicon or a digital hologram written to a spatial light modulator (...

Journal: :Journal of the Optical Society of America. A, Optics, image science, and vision 2005
Raúl I Hernández-Aranda Sabino Chávez-Cerda Julio C Gutiérrez-Vega

A rigorous analysis of the unstable Bessel resonator with convex output coupler is presented. The Huygens-Fresnel self-consistency equation is solved to extract the first eigenmodes and eigenvalues of the cavity, taking into account the finite apertures of the mirrors. Attention was directed to the dependence of the output transverse profiles; the losses; and the modal-frequency changes on the ...

Journal: :Pattern Recognition 2014
Zhuhong Shao Huazhong Shu Jiasong Wu Beijing Chen Jean-Louis Coatrieux

In this paper, the quaternion Bessel-Fourier moments are introduced. The significance of phase information in quaternion Bessel-Fourier moments is investigated and an accurate estimation method for rotation angle is described. Furthermore, a new set of invariant descriptors based on the magnitude and the phase information of quaternion Bessel-Fourier moments is derived. Experimental results sho...

2006
W N Everitt

This survey paper reports on the properties of the fourth-order Bessel-type linear ordinary differential equation, on the generated self-adjoint differential operators in two associated Hilbert function spaces, and on the generalisation of the classical Hankel integral transform. These results are based upon the properties of the classical Bessel and Laguerre second-order differential equations...

Journal: :Optics express 2012
Nicolas Olivier Delphine DéBarre Pierre Mahou Emmanuel Beaurepaire

We study theoretically and numerically third-harmonic generation (THG) from model geometries (interfaces, slabs, periodic media) illuminated by Bessel beams produced by focusing an annular intensity profile. Bessel beams exhibit a phase and intensity distribution near focus different from Gaussian beams, resulting in distinct THG phase matching properties and coherent scattering directions. Exc...

Journal: :Mathematics and Computers in Simulation 2017
M. Altomare F. A. Costabile

The Bessel polynomials are the unique polynomial solutions, with constant equal to 1, of the differential equation xy ′′ (x) + (2x+ 2)y ′ (x) − n(n+ 1)y(x) = 0 (1) They are important in certain problems of mathematical physic, for example they arise in the study of electrical networks and when the wave equation is considered on spherical coordinates. Many application may be found in [7]. In rec...

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