搜索结果: 106-120 共查到“知识库 算子代数”相关记录120条 . 查询时间(1.695 秒)
On a measure of non-compactness for some classical operators
measure of non-compactness maximal functions singular integrals embeddings weight
2007/12/13
The measure of non-compactness is estimated from below for various operators, including the Hardy--Littlewood maximal opera\-tor, the fractional maximal operator and the Hilbert transform, all acting ...
Boundedness of Some Maximal Commutators in Hardy-type Spaces with Non-doubling Measures
maximal commutator Calder\'on--Zygmund operator ${\rm RBMO}(\mu)$ Hardy-type space non-doubling measure
2007/12/12
Let $\mu$ be a non-negative Radon measure on ${\mathbb R}^d$ which satisfies only some growth conditions. Under this assumption, the boundedness in some Hardy-type spaces is established for a class of...
Characterizations and Extensions of Lipschitz-$\alpha$ Operators
Characterization Extension Lipschitz-$\alpha$ operator
2007/12/12
In this work, we prove that a map $F$ from a compact metric space $K$ into a Banach space $X$ over ${\Bbb F}$ is a Lipschitz-$\alpha$ operator if and only if for each $\sigma$ in $X^*$ the map $\sigma...
ASYMPTOTIC OF EIGENVALUES OF THE $p$-LAPLACE OPERATOR AND LATTICE POINTS
$p$-Laplacian eigenvalues lattice points
2007/12/12
In this work we study the spectral counting function for the $p$-Laplace operator in one dimension. We show the existence of a two-term Weyl-type asymptote. The method of proof is rather elementary, b...
Inverse Scattering for a Schrodinger Operator with a Repulsive Potential
Inverse scattering Repulsive potential
2007/12/11
We consider a pair of Hamiltonians $(H, H_0 )$ on $L^2 ({\Bbb R}^n ),$ where $H_0 = p^2 -x^2$ is a Schr\" odinger operator with a repulsive potential, and $H= H_0 +V(x)$. We show that, under suitable ...
Pointwise Simultaneous Approximation by Combinations of Baskakov Operators
Baskakov operator combination simultaneous approximation modulus of smoothness
2007/12/11
In this paper, we investigate the relation between the rate of convergence for the derivatives of the combinations of Baskakov operators and the smoothness for the derivatives of the functions approxi...
ON THE UNIQUE CONTINUATION PROPERTIES FOR ELLIPTIC OPERATORS WITH SINGULAR POTENTIALS
doubling property unique continuation Lipschitz domain Kato--Fefferman--Phong s potential
2007/12/11
Let $u$ be a solution to a second order elliptic equation with singular potentials belonging to Kato--Fefferman--Phong's class in Lipschitz domains. An elementary proof of the doubling property for $u...
SINGULAR MEASURES AND CONVOLUTION OPERATORS
Hardy--Littlewood maximal function Weak type inequalities Singular measures Convolution operators
2007/12/11
We show that in the study of certain convolution operators, functions can be replaced by measures without changing the size of the constants appearing in weak type $(1,1)$ inequalities. As an applicat...
About operator weighted shift
Operator weighted shift Strongly irriducible operator Similarity Commutant Jacobson radical
2007/12/11
Let ${\mathscr H}$ be a complex seperable Hilbert space and ${\mathscr L}({\mathscr H})$ denote the collection of bounded linear operators on ${\mathscr H}$. For an operator in ${\mathscr L}% ({\maths...
Operators on Differential form Spaces for Riemann Surfaces
Riemann surface Composition operator Toeplitz operator
2007/12/11
In the present paper, a problem of Ioana Mihaila is negatively answered on the invertibility of composition operators on Riemann surfaces, and it is proved that the composition operator $C_{\rho }$ is...
Toeplitz算子代数的忠实表示
Toeputz算子代数 拟格序群 忠实表示
2007/11/5
设(G，G+)为一个拟格序群，H为G+的可传定向子集．令GN=G+·H^-1，F^GN为相应的Toeputz算子代数.作者刻划了F^GN的忠实表示。
离散交换群上的万有Toeplitz算子代数(英文)
离散交换群 拟偏序群 万有Toeplitz算子代数
2007/11/5
设G为一离散交换群，（G，G＋）为一拟偏序群．相应于这样的一个拟偏序群（G，G＋），构造了一个万有Toeplitz算子代数．
K-theory associated to vertex operator algebras
K-theory associated vertex operator algebras
2018/4/20
We introduce two K-theories, one for vector bundles whose fibers are modules of vertex operator algebras, another for vector bundles whose fibers are modules of associative algebras. We verify the coh...
The Linear Mean Value of the Remainder Term in the Problem of Asymptotic Behavior of Eigenfunctions of the Automorphic Laplacian
Linear Mean Value Automorphic Laplacian Remainder Term
2010/3/5
The purpose of this paper is to obtain the estimate for the average mean value of the remainder term of the asymptotic formula for the quadratic mean value of the Fourier coefficients of the eigenfunc...
PRODUCTS AND QUOTIENTS OF (p,s)-ABSOLUTELY CONTINUOUS OPERATOR IDEALS
(p,s)-ABSOLUTELY CONTINUOUS OPERATOR IDEALS {\cal P}p, s
2010/3/17
We obtain a generalization of the ideal {\cal M}(q,p) of (q,p)-mixing operators-in the sense of Pietsch- as a consequence of the study of the quotients of (p, s)-absolutely continuous operator ideals ...