L~p Estimates for Hyperbolic Singular Integral Operators

In this paper, we prove Lp-boundedness of hyperbolic singular integral operators for kernels satisfying weakened regularity conditions, where 1相似文献   

L~p Estimates for Bi-parameter and Bilinear Fourier Integral Operators

Fourier integral operators play an important role in Fourier analysis and partial differential equations. In this paper, we deal with the boundedness of the bilinear and bi-parameter Fourier integral operators, which are motivated by the study of one-parameter FIOs and bilinear and bi-parameter Fourier multipliers and pseudo-differential operators. We consider such FIOs when they have compact support in spatial variables. If they contain a real-valued phase φ(x, ξ, η) which is jointly homogeneous in the frequency variables ξ, η, and amplitudes of order zero supported away from the axes and the antidiagonal, we can show that the boundedness holds in the local-L~2 case. Some stronger boundedness results are also obtained under more restricted conditions on the phase functions. Thus our results extend the boundedness results for bilinear and one-parameter FIOs and bilinear and bi-parameter pseudo-differential operators to the case of bilinear and bi-parameter FIOs.     

Weak-type Endpoint Estimates for Multilinear Singular Integral Operators

In this paper, the authors discuss a class of multilinear singular integrals and obtain that the operators are bounded from H^1(R^n) to weak L^1(R^n). Using this result, we can directly prove a main theorem in [5].     

Weighted Estimates for a Class of Quasilinear Integral Operators

Siberian Mathematical Journal - We establish the criteria of validity of some integral weighted inequalities for a class of quasilinear integral operators.     

Bounds on Oscillatory Integral Operators Based on Multilinear Estimates

We apply the Bennett–Carbery–Tao multilinear restriction estimate in order to bound restriction operators and more general oscillatory integral operators. We get improved L ^p estimates in the Stein restriction problem for dimension at least 5 and a small improvement in dimension 3. We prove similar estimates for H?rmander-type oscillatory integral operators when the quadratic term in the phase function is positive definite, getting improvements in dimension at least 5. We also prove estimates for H?rmander-type oscillatory integral operators in even dimensions. These last oscillatory estimates are related to improved bounds on the dimensions of curved Kakeya sets in even dimensions.     

Lp Estimates for a Class of Integral Operators

With the aid of the nonhomogeneous Calderon-Zygmund decomposition the present paper studies the L^p estimates for a class of integral operators related to the boundary value problems of degenerate elliptic equations. The method used here is also applicable to general evolution equations of elliptic type.     

多线性分数次积分迭代型交换子的加权不等式

研究了多线性分数次积分算子的迭代型交换子,给出了双权强型不等式的充分条件,即Fefferman -Phong型条件.对此迭代型交换子,还给出了Fefferman-Stein型加权不等式和Coifman型加权不等式.     

Sharp Function Estimates and Weighted Norm Inequalities for Multilinear Singular Integral Operators

A sharp function estimate is established for multilinear singularintegral operators. As applications, some weighted norm inequalitiesare obtained for such operators. 2000 Mathematics Subject Classification42B20.     

有变量核的分数次积分算子交换子的CBMO估计(英文)

In this paper,the authors introduce the central bounded oscillation space CBMO q (R n),let [b,T,α ] be the commutator generated by fractional integral operators with variable kernels and CBMO function,we establish the boundedness of [b,T,α ] on homogeneous Morrey-Herz spaces.     

非齐型空间上分数型Marcinkiewicz积分算子的加权估计

令（X,d,μ）为满足所谓上倍双倍条件和几何双倍条件的度量测度空间.设M_β,ρ,q为（X,d,μ）上的分数型Marcinkiewicz积分算子.在本文中,作者证明了若β ∈[0,∞）,ρ ∈（0,∞）,q ∈（1,∞）且M_β,ρ,q在L²（μ）上有界,则M_β,ρ,q是从加权Lebesgue空间L^p（w）到加权弱Lebesgue空间L^p,∞（w）上有界和从加权Morrey空间L^p,κ,η（ω）到加权弱Morrey空间WL^p,κ,η（ω）上有界.     

Finite-Dimensional Approximations for Scattering Theory Operators in the Wave-Packet Representation

We consider some types of packet discretization for continuous spectra in quantum scattering problems. As we previously showed, this discretization leads to a convenient finite-dimensional (i.e., matrix) approximation for integral operators in the scattering theory and allows reducing the solution of singular integral equations connected with the scattering theory to some suitable purely algebraic equations on an analytic basis. All singularities are explicitly singled out. Our primary emphasis is on realizing the method practically.     

Integral Inequalities in the Theory of Hessian Operators

Mathematical Notes - The paper discusses the influence of new geometric invariants of domains on Hessian integral inequalities and provides a new proof of the well-known Trudinger–Wang...     

具有变量核的积分算子的交换子的CBMO估计

该文建立了变量核的积分算子的交换子在Herz型空间的CBMO估计.     

The Estimates for Sharp Maximal Functions of Multilinear Strongly Singular Integral Operators

In this paper, the author obtains that the multilinear operators of strongly singular integral operators and their dual operators are bounded from some L^p（R^n） to L^p（R^n） when the m-th order derivatives of A belong to L^p（R^n） for r large enough. By this result, the author gets the estimates for the Sharp maximal functions of the multilinear operators with the m-th order derivatives of A being Lipschitz functions. It follows that the multilinear operators are （L^p, L^p）-type operators for 1 〈 p 〈 ∞.     

CBMO Estimates for Commutators of Multilinear Fractional Integral Operators on Herz Spaces

The CBMO estimates for commutators of fractional integral and Multilinear fractional integral operators with rough kernel are established. This work was completed with the support of Hunan Provincial Natural Science Foundation of China 06A0074.     

Weighted Estimates for the Integral Operators with Monotone Kernel on a Half-Axis

We give criteria for the boundedness of integral operators with nonnegative monotone kernel in the weighted Lebesgue spaces on a half-axis.     

Modular Estimates of Integral Operators with Homogeneous Kernels in Orlicz Type Classes

We study some inequalities for integral operators with homogeneous kernel with respect to modular functionals in Musielak Orlicz type spaces. These inequalities are ?odular” versions of the Hardy type inequality.     

Lower-Bound Estimates for Poisson-Type Approximations

Let S = w ₁ S ₁ + w ₂ S ₂ + ⋯ + w _N S _N . Here S _j is a sum of identically distributed random variables with weight w _j > 0. We consider the cases where S _j is a sum of independent random variables, the sum of independent lattice variables, or has the Markov binomial distribution. Apart from the general case, we investigate the case of symmetric random variables. Distribution of S is approximated by a compound Poisson distribution, by a second-order asymptotic expansion, and by a signed exponential measure. Lower bounds for the accuracy of approximations in uniform metric are established. __________ Translated from Lietuvos Matematikos Rinkinys, Vol. 45, No. 4, pp. 501–524, October–December, 2005.