数学学报杂志 北大期刊 CSCD期刊 统计源期刊

Asymptotic and Partial Asymptotic Hankel Operators on H~2(D~n)

作者：Anuradha; GUPTA; Bhawna; GUPTA 刊期：2019年第11期

In this paper,we generalize the concept of asymptotic Hankel operators on H2(D)to the Hardy space H2(Dn)(over polydisk)in terms of asymptotic Hankel and partial asymptotic Hankel operators and investigate some properties in case of its weak and strong convergence.Meanwhile,we introduce ith-partial Hankel operators on...

Weak (1,1) Boundedness of Oscillatory Singular Integral with Variable Phase

作者：Hai; Xia; YU; Jun; Feng; LI 刊期：2019年第11期

In this paper,the weak(1,1)boundedness of oscillatory singular integral with variable phase P(x)γ(y)for any x,y∈R,Tf(x):=p.v.∫∞-∞eiP(x)γ(y)f(x?y)dy/y is studied,where P is a real monic polynomial on R.

Diffeomorphisms with the M0-shadowing Property

作者：Xu; ZHANG; Xin; Xing; WU 刊期：2019年第11期

This paper studies the M0-shadowing property for the dynamics of diffeomorphisms defined on closed manifolds. The C1 interior of the set of all two dimensional diffeomorphisms with the M0-shadowing property is described by the set of all Anosov diffeomorphisms. The C1-stably M0-shadowing property on a non-trivial tra...

Entire Solutions for Nonlocal Dispersal Equations with Bistable Nonlinearity: Asymmetric Case

作者：Li; ZHANG; Wan; Tong; LI; Zhi; Cheng; WANG; Yu; Juan; SUN 刊期：2019年第11期

This paper mainly focuses on the entire solutions of a nonlocal dispersal equation with asymmetric kernel and bistable nonlinearity. Compared with symmetric case, the asymmetry of the dispersal kernel function makes more diverse types of entire solutions since it can affect the sign of the wave speeds and the symmetr...

A Note on a Subclass of Cowen–Douglas Operators

作者：Liang; TIAN; Wei; GUO; Kui; JI 刊期：2019年第11期

In this note, we study a rich operator class denoted by PB_n(Ω) which includes all homogeneous operators and quasi-homogeneous operators in the Cowen–Douglas class. A complete unitarily classification theorem is given. Furthermore, we also concern the curvature and similarity of operators in PB_n(Ω).

Property T for Actions

作者：Qing; MENG; Li; Guang; WANG 刊期：2019年第11期

We study property T for an action α of a discrete group Γ on a unital C~*-algebra A. Our main results improve some well-known results about property T for groups. Moreover, we introduce Hilbert A-module property T and show that the action α has property T if and only if the reduced crossed product ■has Hilbert A-mod...

Magic Labeling of Disjoint Union Graphs

作者：Tao; WANG; Ming; Ju; LIU; De; Ming; LI 刊期：2019年第11期

Let G be a graph with vertex set V(G),edge set E(G)and maximum degreeΔrespectively.G is called degree-magic if it admits a labelling of the edges by integers{1,2,...,|E(G)|}such that for any vertex v the sum of the labels of the edges incident with v is equal to1+|E(G)|/2·d(v),where d(v)is the degree of v.Let f be a ...

Joint Similarities and Parameterizations for Dilations of Dual g-frame Pairs in Hilbert Spaces

作者：Xun; Xiang; GUO 刊期：2019年第11期

In this paper, we give an operator parameterization for the set of dilations of a given pair of dual g-frames and the set of dilations of pairs of dual g-frames of a given g-frame. In particular,for the dilations of a given pair of dual g-frames, we introduce the concept of joint complementary g-frames and prove that...

H?rmander Type Multipliers on Anisotropic Hardy Spaces

作者：Jiao; CHEN; Liang; HUANG 刊期：2019年第11期

Gelfand–Kirillov Dimension and Reducibility of Scalar Generalized Verma Modules

作者：Zhan; Qiang; BAI; Wei; XIAO 刊期：2019年第11期

The Gelfand–Kirillov dimension is an invariant which can measure the size of infinitedimensional algebraic structures. In this article, we show that it can also measure the reducibility of scalar generalized Verma modules. In particular, we use it to determine the reducibility of scalar generalized Verma modules ass...

Acta Mathematica Sinica English Series Instructions for Authors

刊期：2019年第11期

Submission Authors must use LaTeX for typewriting,and visit our website www.actamath.com to submit your paper.Our address is Editorial Office of Acta Mathematica Sinica,Academy of Mathematics and Systems Science,Chinese Academy of Sciences,Beijing 100190,PR R.China.All papers will be refereed.If necessary,the author(...