Results 21 to 30 of about 196,423 (195)

Integral Fourier operators [PDF]

open access: yes, 2017
Dieser Band basiert auf Vorlesungen, die in einer Schule über Fourier Integraloperatoren in Ouagadougou, Burkina Faso, 14. - 26. September 2015 gehalten wurden. Es bietet eine Einführung in die Fourier Integraloperatoren (FIO) und richtet sich sowohl an Masterstudierende und Promovenden als auch an interessierte Laien. Aufgrund der Breite des Spektrums
Audin, Michèle (Prof. Dr.)   +6 more
openaire   +1 more source

Arbitrary Sampling Fourier Transform and Its Applications in Magnetic Field Forward Modeling

open access: yesApplied Sciences, 2022
Numerical simulation and inversion imaging are essential in geophysics exploration. Fourier transform plays a vital role in geophysical numerical simulation and inversion imaging, especially in solving partial differential equations.
Shikun Dai   +4 more
doaj   +1 more source

The Dunkl kernel and intertwining operator for dihedral groups

open access: yes, 2020
Dunkl operators associated with finite reflection groups generate a commutative algebra of differential-difference operators. There exists a unique linear operator called intertwining operator which intertwines between this algebra and the algebra of ...
De Bie, Hendrik, Lian, Pan
core   +1 more source

Finite-dimensional representations of the elliptic modular double [PDF]

open access: yes, 2015
We investigate the kernel space of an integral operator M(g) depending on the "spin" g and describing an elliptic Fourier transformation. The operator M(g) is an intertwiner for the elliptic modular double formed from a pair of Sklyanin algebras with the
Derkachov, S. E., Spiridonov, V. P.
core   +1 more source

OPERATOR METHOD IN THE SCALAR WAVE DIFFRACTION BY AXIALLY-SYMMETRIC DISCONTINUITIES IN THE SCREEN

open access: yesRadio Physics and Radio Astronomy, 2018
Purpose: The scalar wave diffraction by the annular slot in an infinitely thin screen is considered in case of Dirichlet and Neumann boundary conditions. Diffraction problem by a flat ring is also considered as a dual one.
M. E. Kaliberda   +2 more
doaj   +1 more source

Global $L^p$ continuity of Fourier integral operators [PDF]

open access: yesTransactions of the American Mathematical Society, 2014
20 ...
CORIASCO, Sandro, M. Ruzhansky
openaire   +5 more sources

The equiconvergence theorem for an integral operator with piecewise constant kernel

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2018
The paper is devoted to the equiconvergence of the trigonometric Fourier series and the expansions in the eigen and associated functions of the integral operator A, the kernel of which has jumps on the sides of the square inscribed in the unit square. An
Olga A Koroleva
doaj   +1 more source

Generating functions for giant graviton bound states

open access: yesJournal of High Energy Physics, 2023
We construct generating functions for operators dual to systems of giant gravitons with open strings attached. These operators have a bare dimension of order N so that the usual methods used to solve the planar limit are not applicable.
Warren Carlson   +2 more
doaj   +1 more source

Estimation of the difference of partial sums of expansions by the root functions of the differential operator and into trigonometric Fourier series [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
We consider a linear ordinary differential operator defined by an $n$-th order differential expression with a nonzero coefficient for $(n-1)$th derivative and Birkhoff regular two-point boundary conditions.
Rykhlov, Victor Sergeyevich
doaj   +1 more source

Banach algebra of the Fourier multipliers on weighted Banach function spaces

open access: yesConcrete Operators, 2015
Let MX,w(ℝ) denote the algebra of the Fourier multipliers on a separable weighted Banach function space X(ℝ,w).We prove that if the Cauchy singular integral operator S is bounded on X(ℝ, w), thenMX,w(ℝ) is continuously embedded into L∞(ℝ).
Karlovich Alexei
doaj   +1 more source

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