Banach空间中关于增生算子方程的迭代法的强收敛定理

设X是一实Banach空间,且T:X→X是Lipschitz连续的增生算子.在没有假设limn→∞αn=lim n→∞βn=0之下,本文证明了,Ishikawa迭代序列强收敛到方程x+Tx=f的唯一解,而且还对Ishikawa迭代序列提供了一般的收敛率估计.利用该结果,我们推得,当T:X→X是Lipschitz连续的强增生算子时, Ishikawa迭代序列强收敛到方程Tx=f的唯一解.     

Banach空间中关于增生算子方程的迭代法的强收敛定理

设X是一实Banach空间,且TX→X是Lipschitz连续的增生算子.在没有假设lim αn=1imβn=0之下,本文证明了,Ishikawa迭代序列强收敛到方程x+Tx=f的唯一解,而且还对Ishikawa迭代序列提供了一般的收敛率估计.利用该结果,我们推得,当TX→X是Lipschitz连续的强增生算子时,Ishikawa迭代序列强收敛到方程Tx=f的唯一解.     

关于增生算子方程的具误差的Ishikawa迭代序列的收敛率估计

设X是一实的Banach空间,TLX→X是—Lipschitz的增生算子;证明了具误差的Ishikawa迭代序列强收敛到x＋Tx=f的唯一解;得到一个一般的收敛率估计式．进一步得到：若了T：X→X是—Lipschitz的强增生算子,则具误差的Ishikawa迭代序列强收敛到Tx=f的唯一解．文中结果推广和发展了已有的相关结果．     

关于Banach空间中Lipschitz强伪压缩映象的带误差的Ishikawa型迭代序列

设X是任意实B&nach空间E的闭子空间,TX→X是Lipschitz强伪压缩映象,使得Tx*=x*,对某x*∈X…在没有条件limαn=nlimβn=0之下,本文证明了带误差的Ishikawa型迭代序列强收敛到x*.另外,相关结果又证明了,当TE→E是Lipschitz强增生算子时,带误差的Ishikawa型迭代序列强收敛到方程Tx=f的唯一解.     

Lipschitz强增生算子方程逼近解的带误差的Ishikawa迭代程序

设E是任意实Banach空间，T：E→E是Ligpschitz的强增生算子。证明了带误差的Ishikawa迭代序列强收敛到方程Tx=f的唯一解。特别地，还给出了Ishikawa迭代序列的收敛率估计。另一方面，一个相关结果，讨论了E中Lipschitz强伪压缩映象的不动点的带误差的Ishikawa迭代序列的收敛性。     

广义Lipschitz多值渐近Ф-半压缩映象不动点集的迭代程序

设K是实Banach空间E中的有界邻近子集，多值映象T1，T2：K→2^K是广义一致L—Lipschitz的渐近乒半压缩映象，且T1一致连续．证明了具误差的Ishikawa型迭代集合序列强收敛到T1，T2的公共不动点集．同时，证明了当T：K→2置是一致连续的广义Lipschitz强增生算子时，具误差的Ishikawa型迭代列强收敛到方程Tx=f的解．     

关于增生算子方程解的带误差的Ishikawa迭代程序

该文在Banach空间中证明了，带误差的Ishikawa迭代序列强收敛到Lipschitz连续的增生算子方程的唯一解．而且，也给Ishikawa迭代序列提供了一般的收敛率估计．利用该结果还推得，带误差的Ishikawa迭代序列也强收敛到Lipschitz连续的强增生算子方程的唯一解．     

Lipschitz强增生算子方程解的Ishikawa迭代逼近

设E是任意实Banach空间．T：E→E是Lipschitz强增生算子,在无需假设limαn=limβn=0之下，本文证明了带误差的Ishikawa迭代序列强收敛到方程Tx=f的唯一解，而且还提供了该序列的某些特例的收敛率估计，另外，相关结果也讨论了E中Lipschkz强伪压缩映象的不动点的Ishikawa迭代逼近问题．本文结果改进并推广了文献中的一些最近结果。     

强伪压缩算子带误差的Ishikawa迭代的强稳定性

设X是任意实Banach空间，T：X→X是一Lipschitz强伪压缩算子，本给出T带误差的Ishikawa迭代过程的强稳定性，并给出一个涉及Lipschitz强增生算子T的非线性方程Tx=f迭代解的强稳定性。     

广义LipschitzΦ-增生算子的带误差项的Ishikawa迭代序列的收敛性及应用

在一致光滑Banach空间中,证明了广义LipschitzΦ-增生算子的带误差项的Ishikawa迭代序列强收敛于方程Tx=f的解,其结果改进和扩展了近期许多相关结果.并由此得出了Ishikawa迭代序列稳定性的一些结果.     

Qualitative Analysis of Bifurcating Solutions in the Lengyel-Epstein Model

One of the most fundamental problems in theoretical biology is to explain the mechanisms by which patterns and forms are created in the＇living world. In his seminal paper ＂The Chemical Basis of Morphogenesis＂, Turing showed that a system of coupled reaction-diffusion equations can be used to describe patterns and forms in biological systems. However, the first experimental evidence to the Turing patterns was observed by De Kepper and her associates（1990） on the CIMA reaction in an open unstirred reactor, almost 40 years after Turing＇s prediction. Lengyel and Epstein characterized this famous experiment using a system of reaction-diffusion equations. The Lengyel-Epstein model is in the form as follows     

A REPRESENTATION FORMULA RELATED TO SCHR(O)DINGER OPERATORS

Schr(o)dinger operator is a central subject in the mathematical study of quantum mechanics.Consider the Schrodinger operator H = -△ V on R, where △ = d2/dx2 and the potential function V is real valued. In Fourier analysis, it is well-known that a square integrable function admits an expansion with exponentials as eigenfunctions of -△. A natural conjecture is that an L2 function admits a similar expansion in terms of "eigenfunctions" of H, a perturbation of the Laplacian (see [7], Ch. Ⅺ and the notes), under certain condition on V.     

On a class of self-similar processes with stationary increments in higher order Wiener chaoses

We study a class of self-similar processes with stationary increments belonging to higher order Wiener chaoses which are similar to Hermite processes. We obtain an almost sure wavelet-like expansion of these processes. This allows us to compute the pointwise and local Hölder regularity of sample paths and to analyse their behaviour at infinity. We also provide some results on the Hausdorff dimension of the range and graphs of multidimensional anisotropic self-similar processes with stationary increments defined by multiple Wiener–Itô integrals.     

(0,1 ;0)-INTERPOLATION ON INFINITE INTERVAL (-∞, +∞)

In this paper, we study the explicit representation and convergence of (0, 1; 0)-interpolation on infinite interval, which means to determine a polynomial of degree ≤ 3n - 2 when the function values are prescribed at two set of points namely the zeros of Hn(x) and H′n(x) and the first derivatives at the zeros of H′n(x).     

On a class of Riemann surfaces

It is considered the class of Riemann surfaces with dimT1 = 0, where T1 is a subclass of exact harmonic forms which is one of the factors in the orthogonal decomposition of the spaceΩH of harmonic forms of the surface, namely The surfaces in the class OHD and the class of planar surfaces satisfy dimT1 = 0. A.Pfluger posed the question whether there might exist other surfaces outside those two classes. Here it is shown that in the case of finite genus g, we should look for a surface S with dimT1 = 0 among the surfaces of the form Sg\K , where Sg is a closed surface of genus g and K a compact set of positive harmonic measure with perfect components and very irregular boundary.     

CONTENTS OF VOLUME 30

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Instructions for contributions

正Applied Mathematics-A Journal of Chinese Universities,Series B(Appl.Math.J.Chinese Univ.,Ser.B)is a comprehensive applied mathematics journal jointly sponsored by Zhejiang University,China Society for Industrial and Applied Mathematics,and Springer-Verlag.It is a quarterly journal with     

Journal of Mathematical Research with Applications Guide for Authors

正Journal overview:Journal of Mathematical Research with Applications(JMRA),formerly Journal of Mathematical Research and Exposition(JMRE)created in 1981,one of the transactions of China Society for Industrial and Applied Mathematics,is a home for original research papers of the highest quality in all areas of mathematics with applications.The target audience comprises:pure and applied mathematicians,graduate students in broad fields of sciences and technology,scientists and engineers interested in mathematics.     

Staircase transportation problems with superadditive rewards and cumulative capacities

A cumulative-capacitated transportation problem is studied. The supply nodes and demand nodes are each chains. Shipments from a supply node to a demand node are possible only if the pair lies in a sublattice, or equivalently, in a staircase disjoint union of rectangles, of the product of the two chains. There are (lattice) superadditive upper bounds on the cumulative flows in all leading subrectangles of each rectangle. It is shown that there is a greatest cumulative flow formed by the natural generalization of the South-West Corner Rule that respects cumulative-flow capacities; it has maximum reward when the rewards are (lattice) superadditive; it is integer if the supplies, demands and capacities are integer; and it can be calculated myopically in linear time. The result is specialized to earlier work of Hoeffding (1940), Fréchet (1951), Lorentz (1953), Hoffman (1963) and Barnes and Hoffman (1985). Applications are given to extreme constrained bivariate distributions, optimal distribution with limited one-way product substitution and, generalizing results of Derman and Klein (1958), optimal sales with age-dependent rewards and capacities.To our friend, Philip Wolfe, with admiration and affection, on the occasion of his 65th birthday.Research was supported respectively by the IBM T.J. Watson and IBM Almaden Research Centers and is a minor revision of the IBM Research Report [6].