检索结果-南通市图书馆

Systems Science and Mathematical Sciences 1999年第1期12卷 55-58页

作者： MO Jiaqi (department of mathematics, anhui normal university, wuhu 241000, china) 安徽师范大学数学系安徽芜湖

The singularly perturbed nonlinear problem εy" = f(x, y’)y + g(x, y’), 0 详细信息

The singularly perturbed nonlinear problem εy" = f(x, y’)y + g(x, y’), 0

关键词： Singular perturbation differential inequality boundary value problem.

Invariant sets and solutions to the generalized thin film equation

在线全文

学校读者我要写书评

暂无评论

Science china mathematics 2007年第6期50卷 875-886页

作者： Chang-zheng QU & Chun-rong ZHU Center for Nonlinear Studies, Northwest university, Xi’an 710069, china department of mathematics, Northwest university, Xi’an 710069, china department of mathematics, anhui normal university, wuhu 241000, china Center for Nonlinear Studies Northwest University Xi’an China department of mathematics Northwest University Xi’an China department of mathematics Anhui Normal University Wuhu China

The invariant sets and the solutions of the 1+2-dimensional generalized thin film equation are discussed. It is shown that there exists a class of solutions to the equations, which are invariant with respect to the set $$E_0 = \{ u:u_x = v_x F(u),u_y = v_y F(u)\} ,$$ where v is a smooth function of variables x, y and F is a smooth function of u. This extends the results of Galaktionov (2001) and for the 1+1-dimensional nonlinear evolution equations.

关键词： thin film equation invariant set invariant solution rotation group scaling group 35K55 35K40 82C26

Extension of isometries on the unit sphere of l^p (Γ) space

在线全文

学校读者我要写书评

暂无评论

Science china mathematics 2010年第4期53卷 1085-1096页

作者： FANG XiNian 1,& WANG JianHua 2 1 School of mathematics and Statistics,Nanjing Audit university,Nanjing 210029,china 2 department of mathematics,anhui normal university,wuhu 241000,china School of mathematics and Statistics Nanjing Audit University Nanjing China department of mathematics Anhui Normal University Wuhu China

In this paper,we obtain that every isometry from the unit sphere S(l p (Γ)) of l p (Γ) (1 < p < ∞,p≠2) onto the unit sphere S(E) of a Banach space E can be extended to be a (real) linear isometry of l p (Γ) onto ... 详细信息

关键词： isometric extension l p (Γ) space isometry 1-Lipschitz mapping

Smoothness for the collision local times of bifractional Brownian motions

在线全文

学校读者我要写书评

暂无评论

Science china mathematics 2011年第9期54卷 1859-1873页

作者： SHEN GuangJun 1,2,& YAN LiTan 3 1 department of mathematics,East china university of Science and Technology,Shanghai 200237,china 2 department of mathematics,anhui normal university,wuhu 241000,china 3 department of mathematics,Donghua university,Shanghai 201620,china department of mathematics East China University of Science and Technology Shanghai China department of mathematics Anhui Normal University Wuhu China department of mathematics Donghua University Shanghai China

Let B^Hi,Ki ={ Bt^Hi,Ki, t ≥ 0}, i= 1, 2 be two independent bifractional Brownian motions with respective indices Hi ∈ （0, 1） and K∈ E （0, 1]. One of the main motivations of this paper is to investigate f0^Tδ（Bs^H1 ,K1 - the smoothness of the collision local time, introduced by Jiang and Wang in 2009, IT = f0^T δ（Bs^H1,K1）ds, T 〉 0, where 6 denotes the Dirac delta function. By an elementary method, we show that iT is smooth in the sense of the Meyer-Watanabe if and only if min{H-1K1, H2K2} 〈-1/3.

关键词： bifractional Brownian motion collision local time intersection local time chaos expansion

About Spherical Functions on SL(2,R)

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 1997年第2期13卷 199-206页

作者： Shu Lisheng (department of mathematics,anhui normal university,wuhu 241000,china)Zheng Weixing (department of mathematics,Nanjing university,Nanjing 210093,china) department of mathematics Anhui Normal University 241000 Wuhu China

In this paper,we will discuss some properties of the(n,m)-spherical fuctions on the Lie group G=SL(2, R),and obtain the decomposition of f in C_c^4(G)into these *** we give the Fourier inversion formula for the(n,m)-s... 详细信息

关键词： SL(2,R),(n,m)-spherical functions K-weight inversion formula

A CLASS OF NONLINEAR SINGULARLY PERTURBED INITIAL BOUNDARY VALUE PROBLEMS FOR REACTION DIFFUSION EQUATIONS WITH BOUNDARY PERTURBATION

在线全文

学校读者我要写书评

暂无评论

Applied mathematics(A Journal of Chinese Universities) 2007年第2期22卷 201-206页

作者： Mo Jiaqi department of mathematics, anhui normal university, wuhu 241000, china department of mathematics, Huzhou Teachers College, Huzhou 313000, china Division of Computational Science, E-Institutes of Shanghai Universities at SJTU, Shanghai 200240, china. department of mathematics Anhui Normal University Wuhu China department of mathematics Huzhou Teachers College Huzhou China Division of Computational Science E-Institutes of Shanghai Universities at SJTU Shanghai China

A class of nonlinear initial boundary value problems for reaction diffusion equations with boundary perturbation is considered. Under suitable conditions and using the theory of differential inequalities the asymptoti... 详细信息

关键词： nonlinear reaction diffusion singular perturbation boundary perturbation

在线全文

学校读者我要写书评

暂无评论

厄尔尼诺大气物理机理的周期解

物理学报 2008年第9期57卷 5366-5368页

作者：李晓静江苏技术师范学院数理学院

运用重合度理论探讨了一类非线性问题的周期解.然后将其应用于一个厄尔尼诺大气物理机理振荡,简捷地得到了该模型的周期解.

关键词：非线性厄尔尼诺现象周期解

Variational iteration solving method of a sea-air oscillator model for the ENSO

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2007年第2期17卷 230-232页

作者： MO Jiaqi, LIN Wantao and WANG Hui ( department of mathematics, anhui normal university, wuhu 241000, china Division of Computational Science, E-Institutes of Shanghai Universities, at SJTU, Shanghai 200240, china LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, china Chinese Academy of Meteorological Sciences, Beijing 100081, china) department of mathematics Anhui Normal University Wuhu 241000 China Division of Computational Science E-Institutes of Shanghai Universities at SJTU Shanghai 200240 China LASG Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Chinese Academy of Meteorological Sciences Beijing 100081 China

A time delay equation for sea-air oscillator model is studied. The aim is to create an asymtotic solving method of nonlinear equation for the ENSO model. And based on a class of oscillators of ENSO model, employing the variational iteration method, the approximate solution of corresponding problem is obtained. It is proven from the results that the method of variational iteration method can be used for analyzing the sea surface temperature anomaly in the equatorial eastern Pacific of the atmosphere-ocean oscillation for ENSO model.

关键词： Nonlinear problem, time delay, El Nino-Southern oscillator model variational iteration.

Asymptotic Solution of Quasi-Linear Singularly Perturbed Boundary Value Problems with Singular Equation

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Wuhan university Journal of Natural Sciences 2010年第2期15卷 127-129页

作者： CHEN Lihua1, MO Jiaqi2,3 1. department of mathematics and Computer Science, Fuqing Branch of Fujian normal university, Fuqing 350300, Fujian, china 2. department of mathematics, anhui normal university, wuhu 241000, anhui, china 3. Division of Computational Science, E-Institutes of Shanghai Universities at Shanghai Jiao Jong university, Shanghai 200240, china department of mathematics and Computer Science Fuqing Branch of Fujian Normal University Fuqing China department of mathematics Anhui Normal University Wuhu China Division of Computational Science E-Institutes of Shanghai Universities at Shanghai Jiao Jong University Shanghai China

A class of quasi-linear singularly perturbed boundary value problems with singular equation is considered. Under suitable conditions, the existence and asymptotic behavior of a solution for the boundary value problem are studied by using the theory of differential inequalities, and the uniformly valid asymptotic expansion of solution with boundary layer is obtained.

关键词： nonlinear singular equation singular perturbation boundary value problem

Solvability for Nonlinear Reaction Diffusion Equation with Boundary Perturbation

在线全文

学校读者我要写书评

暂无评论

Wuhan university Journal of Natural Sciences 2009年第6期14卷 481-483页

作者： CHEN Lihua1, MO Jiaqi2,3 1. department of mathematics and Computer Science, Fujian normal university, Fuqing 350300, Fujian, china 2. department of mathematics, anhui normal university, wuhu 241000, anhui, china 3. Division of Computational Science, E-Institutes of Shanghai Universities at Shanghai Jiao Tong university, Shanghai 200240, china department of mathematics and Computer Science Fujian Normal University Fuqing China department of mathematics Anhui Normal University Wuhu China Division of Computational Science E-Institutes of Shanghai Universities at Shanghai Jiao Tong University Shanghai China

In this paper, the nonlinear reaction diffusion equation with boundary perturbation is considered. Using discussions on solvability, the perturbed solution of original problem is obtained, and the uniform validity of ... 详细信息

关键词： perturbation nonlinear reaction diffusion equation solvability