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排序方式: 共有361条查询结果,搜索用时 15 毫秒
21.
讨论了由核函数满足具有某类Dini条件的Marcinkiewicz积分μΩ及函数b∈Lipβ(R~n)生成的交换子μ(_Ω,b)~m的性质.证明了Marcinkiewicz积分交换子μ_(_Ω,b)~m在Hardy型空间H_(bm,s)(R~n)上有界,也在Herz型Hardy空间H_(bm)K_p~(a_q)(R~n)上有界. 相似文献
22.
广义Calderón-Zygmund算子交换子的有界性 总被引:1,自引:0,他引:1
讨论了广义Calderón-Zyginund算子与Lipschitz函数生成的交换子在Lebe-sgue空间及Hardy空间上的有界性,同时得到了其端点估计. 相似文献
23.
齐次Morrey-Herz空间中交换子的中心BMO估计 总被引:1,自引:0,他引:1
设T_b为广义Hardy算子和中心BMO函数生成的交换子,本文得到了该交换子在齐次加权Morrey-Herz空间中的有界性.而且,本文给出了带粗糙核的多线形奇异积分算子在齐次Morrey-Herz空间中的中心BMO估计. 相似文献
24.
An algorithm for computing the commutator AB − BA of 2 × 2 matrices A and B is proposed. The algorithm involves six multiplications. In the case of Hermitian 2 × 2 matrices, it involves six real multiplications.
Original Russian Text ? A.Ya. Belyankov, 2007, published in Zhurnal Vychislitel’noi Matematiki i Matematicheskoi Fiziki, 2007,
Vol. 47, No. 9, p. 1459. 相似文献
25.
Direct approach to quantum extensions of Fisher information 总被引:1,自引:0,他引:1
By manipulating classical Fisher information and employing various derivatives of density operators, and using entirely intuitive
and direct methods, we introduce two families of quantum extensions of Fisher information that include those defined via the
symmetric logarithmic derivative, via the right logarithmic derivative, via the Bogoliubov-Kubo-Mori derivative, as well as
via the derivative in terms of commutators, as special cases. Some fundamental properties of these quantum extensions of Fisher
information are investigated, a multi-parameter quantum Cramér-Rao inequality is established, and applications to characterizing
quantum uncertainty are illustrated.
相似文献
26.
The generalized Morrey spaces are introduced under the hypothesis that Rn is endowed with the general parabolic metric , and the boundedness properties are established in generalized Morrey spaces for a class of singular integral operators, which include Calderon-Zygmund singular integrals and their commutators with BMO. 相似文献
27.
Fangyan Lu 《Journal of Functional Analysis》2006,240(1):84-104
A Lie isomorphism ? between algebras is called trivial if ?=ψ+τ, where ψ is an (algebraic) isomorphism or a negative of an (algebraic) anti-isomorphism, and τ is a linear map with image in the center vanishing on each commutator. In this paper, we investigate the conditions for the triviality of Lie isomorphisms from reflexive algebras with completely distributive and commutative lattices (CDCSL). In particular, we prove that a Lie isomorphism between irreducible CDCSL algebras is trivial if and only if it preserves I-idempotent operators (the sum of an idempotent and a scalar multiple of the identity) in both directions. We also prove the triviality of each Lie isomorphism from a CDCSL algebra onto a CSL algebra which has a comparable invariant projection with rank and corank not one. Some examples of Lie isomorphisms are presented to show the sharpness of the conditions. 相似文献
28.
The authors consider the extended Hecke groups H(λq) generated by T(z) = -1 / z, S(z) = -1/(z + λq,) and R(z) = 1 / z with A, = 2 cos(π/q) for q≥3 an integer. In this paper, the even subgroup He(λq), the second commutator subgroup H (λq) and the principal congruence subgroups Hp(λq) of the extended Hecke groups H(λq) are studied. Also, relations between them are given. 相似文献
29.
Let (0 < α < n) be the generalized commutator generated by fractional integral with rough kernel and the m–th order remainder of the Taylor formula of a function A. In this paper, the (Lp, Lr) (r > 1) boundedness, the weak (L1, Ln/(n–α–β)) boundedness and the (Lp, ?β, ∞p) boundedness of are discussed, when DγA belongs to the Lipschitz function spaces. 相似文献
30.
类似Plauszynski相应定理的证明方法,研究了Marcinkiewicz交换子Cb在Triebel-Lizorkin空间的有界性质,得到如下结果设1<p<∞,0<β<min{1/2,α,}且b(x)∈Λ*β,则对于任意f∈Lp(Rn),有Cb是Lp(Rn)到F*β,∞p(Rn)的有界算子. 相似文献