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THE LOGARITHMIC SOBOLEV INEQUALITY FOR A SUBMANIFOLD IN MANIFOLDS WITH ASYMPTOTICALLY NONNEGATIVE SECTIONAL CURVATURE
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作者 东瑜昕 林和子 陆琳根 《Acta Mathematica Scientia》 SCIE CSCD 2024年第1期189-194,共6页
In this note,we prove a logarithmic Sobolev inequality which holds for compact submanifolds without a boundary in manifolds with asymptotically nonnegative sectional curvature.Like the Michale-Simon Sobolev inequality... In this note,we prove a logarithmic Sobolev inequality which holds for compact submanifolds without a boundary in manifolds with asymptotically nonnegative sectional curvature.Like the Michale-Simon Sobolev inequality,this inequality contains a term involving the mean curvature. 展开更多
关键词 asymptotically nonnegative sectional curvature logarithmic Sobolev inequality ABP method
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A Generalization on Sλ^L(I)- Asymptotically Statistical Equivalent Sequences
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作者 Hafize Gumus Ekrem Savas 《Journal of Mathematics and System Science》 2014年第10期683-688,共6页
In this paper we extend the concept of Sλ^L(I)- asymptotically statistical equivalence which is a natural combination of λ - statistical convergence and asymptotically I -equivalence. We use the sequence P = (Pk... In this paper we extend the concept of Sλ^L(I)- asymptotically statistical equivalence which is a natural combination of λ - statistical convergence and asymptotically I -equivalence. We use the sequence P = (Pk) which is the sequence of positive real numbers. 展开更多
关键词 asymptotically I -equivalence λ - statistical equivalence asymptotically λ - statistical equivalence.
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BIHARMONIC EQUATIONS WITH ASYMPTOTICALLY LINEAR NONLINEARITIES 被引量:11
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作者 刘玥 王征平 《Acta Mathematica Scientia》 SCIE CSCD 2007年第3期549-560,共12页
This article considers the equation △2u = f(x,u)with boundary conditions either u|aΩ = au/an|aΩ = 0 or u|aΩ = △u|aΩ = 0, where f(x, t) is asymptotically linear with respect to t at infinity, and Ω is a ... This article considers the equation △2u = f(x,u)with boundary conditions either u|aΩ = au/an|aΩ = 0 or u|aΩ = △u|aΩ = 0, where f(x, t) is asymptotically linear with respect to t at infinity, and Ω is a smooth bounded domain in R^N, N 〉 4. By a variant version of Mountain Pass Theorem, it is proved that the above problems have a nontrivial solution under suitable assumptions of f(x, t). 展开更多
关键词 BIHARMONIC mountain pass theorem asymptotically linear
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ITERATIVE APPROXIMATION OF FIXED POINTS OF (ASYMPTOTICALLY) NONEXPANSIVE MAPPINGS 被引量:8
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作者 Zeng LuchuanDept. of Math.,Shanghai Normal Univ.,Shanghai 200234. 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2001年第4期402-408,共7页
Let E be a uniformly convex Banach space which satisfies Opial's condition or has a Frechet differentiable norm,and C be a bounded closed convex subset of E. If T∶C→C is (asymptotically)nonexpans... Let E be a uniformly convex Banach space which satisfies Opial's condition or has a Frechet differentiable norm,and C be a bounded closed convex subset of E. If T∶C→C is (asymptotically)nonexpansive,then the modified Ishikawa iteration process defined byx n+1 =t nT ns nT nx n+1-s nx n+(1-t n)x n,converges weakly to a fixed point of T ,where {t n} and {s n} are sequences in [0,1] with some restrictions. 展开更多
关键词 Fixed point (asymptotically)nonexpansive mapping modified Ishikawa iteration process Frechet differentiable norm Opial condition.
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ON THE ITERATIVE APPROXIMATION PROBLEM OF FIXED OINTS FOR ASYMPTOTICALLY NON-EXPANSIVE TYPE MAPPINGS IN BANACH SPACES 被引量:7
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作者 张石生 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2001年第1期25-34,共10页
Some iterative approximation theorems of fixed points for asymptotically nonexpansive type mappings in Banach spaces are obtained.
关键词 asymptotically nonexpansive mapping fixed point modified Ishikawa iterative sequence with errors modified Mann iterative sequence with errors
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Existence of asymptotically almost periodic solutions and stability properties for functional difference equations 被引量:4
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作者 吴中华 《Journal of Chongqing University》 CAS 2012年第2期97-102,共6页
For functional difference equations with unbounded delay,we characterized the existence of totally stable and asymptotically almost periodic solution by using stability properties of a bounded solution in a certain li... For functional difference equations with unbounded delay,we characterized the existence of totally stable and asymptotically almost periodic solution by using stability properties of a bounded solution in a certain limiting equation. 展开更多
关键词 functional difference equations asymptotically almost periodic solutions total stability properties
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ASYMPTOTIC BEHAVIOR FOR COMMUTATIVE SEMIGROUPS OF ALMOST ASYMPTOTICALLY NONEXPANSIVE TYPE MAPPINGS 被引量:1
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作者 曾六川 《Acta Mathematica Scientia》 SCIE CSCD 2006年第2期246-254,共9页
This article introduces the concept of commutative semigroups of almost asymptotically nonexpansive-type mappings in a Banach space X which has the Opial property and whose norm is UKK, and establishes the weak conver... This article introduces the concept of commutative semigroups of almost asymptotically nonexpansive-type mappings in a Banach space X which has the Opial property and whose norm is UKK, and establishes the weak convergence theorems for almostorbits of this class of commutative semigroups. The author improves, extends and develops some recent and earlier results. 展开更多
关键词 Semitopological semigroup almost asymptotically nonexpansive type mapping almost orbit asymptotic behavior
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FIXED POINTS OF A PAIR OF ASYMPTOTICALLY REGULAR MAPPINGS 被引量:1
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作者 B. K. Sharma B. S. Thakur(School of Studies in Mathematics.Pt. Ravishankar Shukla University. Raipur-492010 India)(Received Nov. 20. 1996. Communicated by Ding Xieping) 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 1997年第8期771-778,共8页
In this paper some theorems on fixed points of pair of asymptotically regularmappings in p-uniformly convex Banach space are proved For these mappings somefixed point theorems in a Hilbert space.in Lp spaces in Hardy ... In this paper some theorems on fixed points of pair of asymptotically regularmappings in p-uniformly convex Banach space are proved For these mappings somefixed point theorems in a Hilbert space.in Lp spaces in Hardy spaces Hp and in Sobolev spaces Hpk for 1<P<+∞ and K>0 are also established.Thus resultsof Gornicki Kruppel and others are extended. 展开更多
关键词 asymptotically regular mappings p-uniformly convex Banach space asymptotic center fixed points
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NONTRIVIAL SOLUTIONS FOR ASYMPTOTICALLY LINEAR HAMILTONIAN SYSTEMS WITH LAGRANGIAN BOUNDARY CONDITIONS 被引量:1
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作者 刘春根 张清业 《Acta Mathematica Scientia》 SCIE CSCD 2012年第4期1545-1558,共14页
In this article, we study the existence of nontrivial solutions for a class of asymptotically linear Hamiltonian systems with Lagrangian boundary conditions by the Galerkin approximation methods and the L-index theory... In this article, we study the existence of nontrivial solutions for a class of asymptotically linear Hamiltonian systems with Lagrangian boundary conditions by the Galerkin approximation methods and the L-index theory developed by the first author. 展开更多
关键词 kLagrangian boundary conditions Hamiltonian systems asymptotically linear Maslov-type index
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Global Stability for a Asymptotically Periodic Cooperative Lotka-Volterra System with Time Delays 被引量:1
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作者 Talat Tayir Rouzimaimaiti Mahemuti 《Open Journal of Applied Sciences》 2017年第5期207-212,共6页
In this paper a class of cooperative Lotka-Volterra population system with time delay is considered. Some sufficient conditions on the existence and globally asymptotically stability for the asymptotically periodic so... In this paper a class of cooperative Lotka-Volterra population system with time delay is considered. Some sufficient conditions on the existence and globally asymptotically stability for the asymptotically periodic solution of the system are established by using the Lyapunov function method and the method given in Fengying Wei and Wang Ke (Applied Mathematics and Computation 182 (2006) 161-165). 展开更多
关键词 LOTKA-VOLTERRA COOPERATIVE System asymptotically PERIODIC Function Global Asymptotic Stability Time Delay
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Strong Convergence of an Implicit Iteration Process for a Finite Family of Asymptotically Ф-pseudocontractive Mappings 被引量:1
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作者 王学武 《Northeastern Mathematical Journal》 CSCD 2008年第4期300-310,共11页
Strong convergence theorems for approximation of common fixed points of asymptotically Ф-quasi-pseudocontractive mappings and asymptotically C-strictly- pseudocontractive mappings are proved in real Banach spaces by ... Strong convergence theorems for approximation of common fixed points of asymptotically Ф-quasi-pseudocontractive mappings and asymptotically C-strictly- pseudocontractive mappings are proved in real Banach spaces by using a new composite implicit iteration scheme with errors. The results presented in this paper extend and improve the main results of Sun, Gu and Osilike published on J. Math. Anal. Appl. 展开更多
关键词 asymptotically Ф-quasi-pseudocontractive asymptotically Ф-strictly- pseudocontractive implicit iteration scheme strong approximation common fixed point
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ADM Mass for Asymptotically de Sitter Space-Time
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作者 黄仕明 岳瑞宏 贾冬燕 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第9期473-476,共4页
In this paper,an ADM mass formula for asymptotically de Sitter(dS) space-time is derived from theenergy-momentum tensor.We take the vacuum dS space as the background and investigate the ADM mass of the(d + 3)-dimensio... In this paper,an ADM mass formula for asymptotically de Sitter(dS) space-time is derived from theenergy-momentum tensor.We take the vacuum dS space as the background and investigate the ADM mass of the(d + 3)-dimensional sphere-symmetric space with a positive cosmological constant,and find that the ADM mass ofasymptotically dS space is based on the ADM mass of Schwarzschild field and the cosmological background brings somesmall mass contribution as well. 展开更多
关键词 ADM mass asymptotically de Sitter space-time cosmological constant
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A one-step implicit iterative method for two finite families of asymptotically nonexpansive mappings in a hyperbolic space
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作者 Hafiz Fukhar-ud-din Amna Kalsoom Safeer H Khan 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2018年第3期274-286,共13页
We introduce a one-step implicit iterative method for two finite families of asymptotically nonexpansive mappings in a hyperbolic space and use it to approximate common fixed points of these families. The results pres... We introduce a one-step implicit iterative method for two finite families of asymptotically nonexpansive mappings in a hyperbolic space and use it to approximate common fixed points of these families. The results presented in this paper are new in the setting of hyperbolic spaces. On top, these are generalizations of several results in literature from Banach spaces to hyperbolic spaces. At the end of the paper, we give an example to validate our results. 展开更多
关键词 uniformly convex hyperbolic space asymptotically nonexpansive mapping common fixed point strong convergence
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Random attractors for asymptotically upper semicompact multivalue random semiflows
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作者 李挺 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2007年第11期1527-1534,共8页
The present paper studied the dynamics of some multivalued random semiflow. The corresponding concept of random attractor for this case was introduced to study asymptotic behavior. The existence of random attractor of... The present paper studied the dynamics of some multivalued random semiflow. The corresponding concept of random attractor for this case was introduced to study asymptotic behavior. The existence of random attractor of multivalued random semiflow was proved under the assumption of pullback asymptotically upper semicompact, and this random attractor is random compact and invariant. Furthermore, if the system has ergodicity, then this random attractor is the limit set of a deterministic bounded set. 展开更多
关键词 random attractor asymptotically upper semicompact absorbing set
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ASYMPTOTICALLY OPTIMAL EMPIRICAL BAYES ESTIMATION FOR THE PARAMETERS OF MULTI-PARAMETER DISCRETE EXPONENTIAL FAMILY
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作者 杨亚宁 韦来生 《Acta Mathematica Scientia》 SCIE CSCD 1996年第1期15-22,共8页
For the multi-parameter discrete exponential family,we construct an empirical Bayes(EB)estimator of the vector-valued parameterθ.under some conditions,this estimator is proved to be asymptotically optimal.
关键词 Empirical Bayes estimation asymptotically optimal multi-parameter discrete exp onential family.
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Topological Tail Pressure for Asymptotically Sub-additive Continuous Potentials
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作者 DING DAN-DAN MA XIAN-FENG +1 位作者 CHEN ER-CAI Lei Feng-chun 《Communications in Mathematical Research》 CSCD 2017年第4期327-339,共13页
We define the topological tail pressure and the conditional pressure for asymptotically sub-additive continuous potentials on topological dynamical systems and obtain a variational principle for the topological tail p... We define the topological tail pressure and the conditional pressure for asymptotically sub-additive continuous potentials on topological dynamical systems and obtain a variational principle for the topological tail pressure without any additional assumptions. 展开更多
关键词 asymptotically sub-additive potential tail pressure entropy structure variational principle
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INTERATIVE APPROXIMATION OF FIXED POINTS FOR ALMOST ASYMPTOTICALLY NONEXPANSIVE TYPE MAPPINGS IN BANACH SPACES
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作者 曾六川 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2003年第12期1421-1430,共10页
A new class of almost asymptotically nonexpansive type mappings in Banach spaces is introduced,which includes a number of known classes of nonlinear Lipschitzian mappings and non_Lipschitzian mappings in Banach spaces... A new class of almost asymptotically nonexpansive type mappings in Banach spaces is introduced,which includes a number of known classes of nonlinear Lipschitzian mappings and non_Lipschitzian mappings in Banach spaces as special cases; for example,the known classes of nonexpansive mappings,asymptotically nonexpansive mappings and asymptotically nonexpansive type mappings.The convergence problem of modified Ishikawa iterative sequences with errors for approximating fixed points of almost asymptotically nonexpansive type mappings is considered.Not only S.S.Chang's inequality but also H.K.Xu's one for the norms of Banach spaces are applied to make the error estimate between the exact fixed point and the approximate one.Moreover,Zhang Shi_sheng's method(Applied Mathematics and Mechanics(English Edition),2001,22(1):25-34) for making the convergence analysis of modified Ishikawa iterative sequences with errors is extended to the case of almost asymptotically nonexpansive type mappings. The new convergence criteria of modified Ishikawa iterative sequences with errors for finding fixed points of almost asymptotically nonexpansive type mappings in uniformly convex Banach spaces are presented. Also,the new convergence criteria of modified Mann iterative sequences with errors for this class of mappings are immediately obtained from these criteria.The above results unify,improve and generalize Zhang Shi_sheng's ones on approximating fixed points of asymptotically nonexpansive type mappings by the modified Ishikawa and Mann iterative sequences with errors. 展开更多
关键词 almost asymptotically nonexpansive type mapping fixed point modified Ishikawa iterative sequence with error modified Mann iterative sequence with error
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APPROXIMATING COMMON FIXED POINTS OF NEARLY ASYMPTOTICALLY NONEXPANSIVE MAPPINGS
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作者 Safeer Hussain Khan Mujahid Abbas 《Analysis in Theory and Applications》 2011年第1期76-91,共16页
We use an iteration scheme to approximate common fixed points of nearly asymptotically nonexpansive mappings. We generalize corresponding theorems of [1] to the case of two nearly asymptotically nonexpansive mappings ... We use an iteration scheme to approximate common fixed points of nearly asymptotically nonexpansive mappings. We generalize corresponding theorems of [1] to the case of two nearly asymptotically nonexpansive mappings and those of [9] not only to a larger class of mappings but also with better rate of convergence. 展开更多
关键词 iteration scheme nearly asymptotically nonexpansive mapping rate of con-vergence common fixedpoint weak and strong convergence
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A Weak Convergence Theorem for A Finite Family of Asymptotically Nonexpansive Mappings
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作者 Kan Xu-zhou Guo Wei-ping 《Communications in Mathematical Research》 CSCD 2014年第4期295-300,共6页
The purpose of this paper is to prove a new weak convergence theorem for a finite family of asymptotically nonexpansive mappings in uniformly convex Banach space.
关键词 asymptotically nonexpansive mapping weak convergence common fixed point uniformly convex Banach space
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Strong Convergence Theorems for Mixed Type Asymptotically Nonexpansive Mappings
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作者 Wei Shi-long Guo Wei-ping Ji You-qing 《Communications in Mathematical Research》 CSCD 2015年第2期149-160,共12页
The purpose of this paper is to study a new two-step iterative scheme with mean errors of mixed type for two asymptotically nonexpansive self-mappings and two asymptotically nonexpansive nonself-mappings and prove str... The purpose of this paper is to study a new two-step iterative scheme with mean errors of mixed type for two asymptotically nonexpansive self-mappings and two asymptotically nonexpansive nonself-mappings and prove strong convergence theorems for the new two-step iterative scheme in uniformly convex Banach spaces. 展开更多
关键词 mixed type asymptotically nonexpansive mapping uniformly convexBanach space common fixed point strong convergence
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