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We deal with a real valued integral operator L of Laplace transformation type acting between Lebesgue spaces on the semi-axis. Sufficient conditions for belonging L to Schatten type classes are obtained. Some upper asymptotic estimates for…

Functional Analysis · Mathematics 2017-09-01 Elena P. Ushakova

The compactness of the commutators of bilinear fractional integral operators and point-wise multiplication, acting on products of Lebesgue spaces, is characterized in terms of appropriate mean oscillation properties of their symbols. The…

Functional Analysis · Mathematics 2014-11-05 Lucas Chaffee , Rodolfo H. Torres

In this paper, we consider $L^p$- estimate for a class of oscillatory integral operators satisfying the Carleson-Sj\"olin conditions with further convex and straight assumptions. As applications, the multiplier problem related to a general…

Analysis of PDEs · Mathematics 2022-01-05 Chuanwei Gao , Jingyue Li , Liang Wang

In this paper, we first prove some local estimates for bilinear operators (closely related to the bilinear Hilbert transform and similar singular operators) with truncated symbol. Such estimates, in accordance with the Heisenberg…

Functional Analysis · Mathematics 2008-02-08 Frederic Bernicot

We give in this short paper a sharp estimate for the norm of a multivariate dilation operator generated by multi-matrix (tensor) linear argument transformation (dilation operator) between two different weight Lebesgue-Riesz and Grand…

Functional Analysis · Mathematics 2015-03-19 E. Ostrovsky , L. Sirota

In this article we consider the generalized integral operators acting on the Hilbert space $H^2$. We characterize when these operators are uniform, strong and weakly asymptotic Toeplitz and Hankel operators. Moreover we completely describe…

Functional Analysis · Mathematics 2024-09-17 C. Bellavita , G. Stylogiannis

We intend to derive the moment and exponential tail estimates for the so-called bivariate or more generally multivariate functional operations, not necessary to be linear or even multilinear. We will show also the strong or at last weak…

Functional Analysis · Mathematics 2018-05-08 E. Ostrovsky , L. Sirota

Criteria for the fulfillment of inequalities in weighted smoothness function spaces of Besov type with Riemann-Liouville operators of natural orders on the real axis and semi-axes are found. The obtained estimates are refined under…

Functional Analysis · Mathematics 2025-03-19 Elena P. Ushakova

We prove sharp stability estimates for the variation of the eigenvalues of non-negative self-adjoint elliptic operators of arbitrary even order upon variation of the open sets on which they are defined. These estimates are expressed in…

Spectral Theory · Mathematics 2012-10-15 Victor Burenkov , Pier Domenico Lamberti

We derive a sharp Grand Lebesgue Space norm estimations for normalized eigen functions for the Laplace-Beltrami operator defined on the compact smooth Riemann manifold. These estimates allow us to deduce in particular the exponential…

Functional Analysis · Mathematics 2021-10-06 M. R. Formica , E. Ostrovsky , L. Sirota

In the paper two-weighted norm estimates with general weights for Hardy-type transforms, maximal functions, potentials and Calder\'on-Zygmund singular integrals in variable exponent Lebesgue spaces defined on quasimetric measure spaces $(X,…

Functional Analysis · Mathematics 2010-07-09 Vakhtang Kokilashvili , Alexander Meskhi And Muhammad Sarwar

Let $\X\simeq G/K$ be a Riemannian symmetric space of non-compact type, $\widetilde \X$ its Oshima compactification, and $(\pi,\mathrm{C}(\widetilde \X))$ the regular representation of $G$ on $\widetilde \X$. We study integral operators on…

Differential Geometry · Mathematics 2011-02-25 Aprameyan Parthasarathy , Pablo Ramacher

It is proved that both oscillatory integral operators and fractional oscillatory integral operators are bounded on weighted Morrey spaces. The corresponding commutators generated by $BMO$ functions are also considered.

Functional Analysis · Mathematics 2011-11-23 Zunwei Fu , Shaoguang Shi , Shanzhen Lu

The purpose of this paper is to establish the weighted norm inequalities of one-sided oscillatory integral operators by the aid of interpolation of operators with change of measures.

Functional Analysis · Mathematics 2011-06-07 Zunwei Fu , Shaoguang Shi , Shanzhen Lu

We mostly survey results concerning the $L^2$ boundedness of oscillatory and Fourier integral operators. This article does not intend to give a broad overview; it mainly focusses on a few topics directly related to the work of the authors.

Classical Analysis and ODEs · Mathematics 2007-05-23 Allan Greenleaf , Andreas Seeger

We investigate the structure of norm-preserving and linear but not necessarily surjective operators on variable-exponent, discrete Lebesgue spaces. A certain class of isometries, novel to this work, are especially considered; this class…

Functional Analysis · Mathematics 2020-07-13 Philip M. Gipson

In three-dimensional case, we consider two classical operators: Schrodinger operator and an operator in the divergence form. For slowly-decaying oscillating potentials, we establish spatial asymptotics of the Green's function. The main term…

Analysis of PDEs · Mathematics 2018-12-20 Sergey A. Denisov

We observe that solutions of a large class of highly oscillatory second order linear ordinary differential equations can be approximated using nonoscillatory phase functions. In addition, we describe numerical experiments which illustrate…

Numerical Analysis · Mathematics 2014-09-16 Jhu Heitman , James Bremer , Vladimir Rokhlin

The article presents the procedure of the index calculation for the elements of the algebra generated by one dimensional singular integral operators with discontinuous oscillating coefficients.

Functional Analysis · Mathematics 2007-05-23 E. V. Akulich , A. V. Lebedev

In this paper, we investigate sharp damping estimates for a class of one dimensional oscillatory integral operators with real-analytic phases. By establishing endpoint estimates for suitably damped oscillatory integral operators, we are…

Classical Analysis and ODEs · Mathematics 2019-01-11 Zuoshunhua Shi , Shaozhen Xu , Dunyan Yan