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Hybrid Extragradient-Type Methods for Finding a Common Solution of an Equilibrium Problem and a Family of Strict Pseudo-Contraction Mappings
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作者 Pham Ngoc Anh Tran Dinh Quoc Dang Xuan Son 《Applied Mathematics》 2012年第10期1357-1367,共11页
This paper proposes a new hybrid variant of extragradient methods for finding a common solution of an equilibrium problem and a family of strict pseudo-contraction mappings. We present an algorithmic scheme that combi... This paper proposes a new hybrid variant of extragradient methods for finding a common solution of an equilibrium problem and a family of strict pseudo-contraction mappings. We present an algorithmic scheme that combine the idea of an extragradient method and a successive iteration method as a hybrid variant. Then, this algorithm is modified by projecting on a suitable convex set to get a better convergence property. The convergence of two these algorithms are investigated under certain assumptions. 展开更多
关键词 EQUILIBRIUM Problems Fixed Point pseudo-Monotone Lipschitz-Type CONTINUITY Extragradient Method STRICT pseudo-contraction mapping
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A NEW ITERATIVE METHOD FOR FINDING COMMON SOLUTIONS OF GENERALIZED EQUILIBRIUM PROBLEM,FIXED POINT PROBLEM OF INFINITE k-STRICT PSEUDO-CONTRACTIVE MAPPINGS,AND QUASI-VARIATIONAL INCLUSION PROBLEM 被引量:5
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作者 刘敏 张石生 《Acta Mathematica Scientia》 SCIE CSCD 2012年第2期499-519,共21页
In this article, we introduce a hybrid iterative scheme for finding a common element of the set of solutions for a generalized equilibrium problems, the set of common fixed point for a family of infinite k-strict pseu... In this article, we introduce a hybrid iterative scheme for finding a common element of the set of solutions for a generalized equilibrium problems, the set of common fixed point for a family of infinite k-strict pseudo-contractive mappings, and the set of solutions of the variational inclusion problem with multi-valued maximal monotone mappings and inverse-strongly monotone mappings in Hilbert space. Under suitable conditions, some strong convergence theorems are proved. Our results extends the recent results in G.L.Acedo and H.K.Xu [2], Zhang, Lee and Chan [8], Wakahashi and Toyoda [9], Takahashi and Takahashi [I0] and S. S. Chang, H. W. Joseph Lee and C. K. Chan [II], S.Takahashi and W.Takahashi [12]. Moreover, the method of proof adopted in this article is different from those of [4] and [12]. 展开更多
关键词 k-strict pseudo-contractive mappings generalized equilibrium problem vis-cosity approximation method variational inclusion problem multi-valuedmaximal monotone mappings s-inverse-strongly monotone mapping
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APPROXIMATION OF FIXED POINTS AND VARIATIONAL SOLUTIONS FOR PSEUDO-CONTRACTIVE MAPPINGS IN BANACH SPACES 被引量:2
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作者 Yekini SHEHU 《Acta Mathematica Scientia》 SCIE CSCD 2014年第2期409-423,共15页
Let K be a nonempty, closed and convex subset of a real reflexive Banach space E which has a uniformly Gateaux differentiable norm. Assume that every nonempty closed con- vex and bounded subset of K has the fixed poin... Let K be a nonempty, closed and convex subset of a real reflexive Banach space E which has a uniformly Gateaux differentiable norm. Assume that every nonempty closed con- vex and bounded subset of K has the fixed point property for nonexpansive mappings. Strong convergence theorems for approximation of a fixed point of Lipschitz pseudo-contractive map- pings which is also a unique solution to variational inequality problem involving φ-strongly pseudo-contractive mappings are proved. The results presented in this article can be applied to the study of fixed points of nonexpansive mappings, variational inequality problems, con- vex optimization problems, and split feasibility problems. Our result extends many recent important results. 展开更多
关键词 pseudo-contractive mappings reflexive Banach spaces uniformly Gateaux differentiable norm variational inequality
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SOME CONVERGENCE PROBLEM OF ITERATIVE SEQUENCESFOR ACCRETIVE AND PSEUDO-CONTRACTIVETYPE MAPPING IN BANACH SPACES
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作者 ZHANG Shi-sheng(张石生) 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2002年第4期394-408,共15页
Some necessary and sufficient conditions for convergence of Ishikawa Mann and steepest descent iterative sequence for accretive and pseudo-contractive type mapping in Banach spaces were obtained. The results improve, ... Some necessary and sufficient conditions for convergence of Ishikawa Mann and steepest descent iterative sequence for accretive and pseudo-contractive type mapping in Banach spaces were obtained. The results improve, extend and include some recent results. 展开更多
关键词 accretive mapping pseudo-contractive mapping hemi-accretive mapping hemi-pseudo-contractive mapping Ishikawa iterative sequence Mann iterative sequence steepest descent sequence
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CQ Method for Strictly Pseudo-Contractive Mapping
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作者 黄家琳 陈世群 《Journal of Southwest Jiaotong University(English Edition)》 2009年第4期355-358,共4页
This paper obtains a strong convergence theorem for k-strictly pseudo-contractive mapping under the framework of Hilbert spaces using CQ method. Due to the fact that non-expansive mapping is only O-strictly pseudo-con... This paper obtains a strong convergence theorem for k-strictly pseudo-contractive mapping under the framework of Hilbert spaces using CQ method. Due to the fact that non-expansive mapping is only O-strictly pseudo-contractive, the main result obtained in this paper extends the corresponding main result of Nakajo-Takahashi from non-expansive mapping to k-strictly pseudo-contractive one, where k∈ [0,1). 展开更多
关键词 k-Strictly pseudo-contractive mapping CQ method Metric projection ]
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A universal algorithm to generate pseudo-random numbers based on uniform mapping as homeomorphism 被引量:4
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作者 王福来 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第9期244-249,共6页
A specific uniform map is constructed as a homeomorphism mapping chaotic time series into [0,1] to obtain sequences of standard uniform distribution. With the uniform map, a chaotic orbit and a sequence orbit obtained... A specific uniform map is constructed as a homeomorphism mapping chaotic time series into [0,1] to obtain sequences of standard uniform distribution. With the uniform map, a chaotic orbit and a sequence orbit obtained are topologically equivalent to each other so the map can preserve the most dynamic properties of chaotic systems such as permutation entropy. Based on the uniform map, a universal algorithm to generate pseudo random numbers is proposed and the pseudo random series is tested to follow the standard 0-1 random distribution both theoretically and experimentally. The algorithm is not complex, which does not impose high requirement on computer hard ware and thus computation speed is fast. The method not only extends the parameter spaces but also avoids the drawback of small function space caused by constraints on chaotic maps used to generate pseudo random numbers. The algorithm can be applied to any chaotic system and can produce pseudo random sequence of high quality, thus can be a good universal pseudo random number generator. 展开更多
关键词 pseudo random numbers uniform map CHAOS
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Convergence Theorems of φ-pseudo Contractive Type Mappings in Normed Linear Spaces 被引量:7
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作者 谷峰 《Northeastern Mathematical Journal》 CSCD 2001年第3期340-346,共7页
In this paper, by virtue of an inequality and sane analysis techniques, we prove sane convergence theorems cm the iterative process for nonlinear mappings of-pseudo contractive type in named linear spaces, which exten... In this paper, by virtue of an inequality and sane analysis techniques, we prove sane convergence theorems cm the iterative process for nonlinear mappings of-pseudo contractive type in named linear spaces, which extend and improve the corresponding results obtained by others recently. 展开更多
关键词 φ-pseudo contractive type mapping φ-hemi contractive type mapping strictly pseudo contractive mapping Ishikawa iterative processes with error
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ON THE CONVERGENCE PROBLEMS OF ISHIKAWA AND MANN ITERATIVE PROCESSES WITH ERROR FOR Φ-PSEUDO CONTRACTIVE TYPE MAPPINGS 被引量:1
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作者 张石生 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2000年第1期3-14,共12页
The purpose of this paper is to introduce the concept of Φ_pseudo contractive type mapping and to study the convergence problem of Ishikawa and Mann iterative processes with error for this kind of mappings. The resul... The purpose of this paper is to introduce the concept of Φ_pseudo contractive type mapping and to study the convergence problem of Ishikawa and Mann iterative processes with error for this kind of mappings. The results presented in this paper improve and extend many authors'recent results. 展开更多
关键词 Φ-pseudo contractive type mapping accretive mapping pseudo_contractive mapping Φ_strongly accretive mapping Φ_hemi_contractive mapping Ishikawa iterative processes with error Mann iterative process with error
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Coupled Fixed Point for (<i>&alpha;</i>, <i>&Psi;</i>)-Contractive in Partially Ordered Metric Spaces Using Compatible Mappings
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作者   Preeti Sanjay Kumar 《Applied Mathematics》 2015年第8期1380-1388,共9页
In this paper, first we introduce notions of (α, Ψ)-contractive and (α)-admissible for a pair of map and prove a coupled coincidence point theorem for compatible mappings using these notions. Our work extends and g... In this paper, first we introduce notions of (α, Ψ)-contractive and (α)-admissible for a pair of map and prove a coupled coincidence point theorem for compatible mappings using these notions. Our work extends and generalizes the results of Mursaleen et al. [1]. At the end, we will provide an example in support of our result. 展开更多
关键词 Coupled COINCIDENCE Point α-ψ-contractive mapping Compatible mappingS
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Convergence theorem of common fixed points for Lipschitzian pseudo-contraction semi-groups in Banach spaces
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作者 张石生 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2009年第2期145-152,共8页
The purpose of this paper is to study the weak convergence problems of the implicity iteration process for Lipschitzian pseudocontractive semi-groups in the general Banach spaces. The results presented in this paper e... The purpose of this paper is to study the weak convergence problems of the implicity iteration process for Lipschitzian pseudocontractive semi-groups in the general Banach spaces. The results presented in this paper extend and improve the corresponding results of some people. 展开更多
关键词 Lipschitzian pseudo-contraction semi-group demi-closed principle common fixed point Opial condition strongly pseudo-contraction mapping implicit iteration process
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A Modified Averaging Composite Implicit Iteration Process for Common Fixed Points of a Finite Family of k-Strictly Asymptotically Pseudocontractive Mappings
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作者 Donatus Igbokwe Oku Ini 《Advances in Pure Mathematics》 2011年第4期204-209,共6页
The composite implicit iteration process introduced by Su and Li [J. Math. Anal. Appl. 320 (2006) 882-891] is modified. A strong convergence theorem for approximation of common fixed points of finite family of k-stric... The composite implicit iteration process introduced by Su and Li [J. Math. Anal. Appl. 320 (2006) 882-891] is modified. A strong convergence theorem for approximation of common fixed points of finite family of k-strictly asymptotically pseudo-contractive mappings is proved in Banach spaces using the modified iteration process. 展开更多
关键词 IMPLICIT ITERATION Process k-Strictly ASYMPTOTICALLY pseudo-contractive maps Fixed POINTS
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The Pseudo-umbilical Surfaces in R^4 and Their Gauss Maps 被引量:1
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作者 许志才 徐森林 《Chinese Quarterly Journal of Mathematics》 CSCD 2001年第1期46-51,共6页
Some properties of the pseudo umbilical surface M in R 4 are discussed and thus the lower for the tolal mean curvature of M is estimated. On the basis of the estimation and by using the Gauss map of M... Some properties of the pseudo umbilical surface M in R 4 are discussed and thus the lower for the tolal mean curvature of M is estimated. On the basis of the estimation and by using the Gauss map of M , a sufficient condition is given for M as a flat torus in R 4 . 展开更多
关键词 the pseudo umbilical surface total mean curvature Gauss map TORUS
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NECESSARY AND SUFFICIENT CONDITION OF THE STRONG CONVERGENCE FOR TWO FINITE FAMILIES OF UNIFORMLY L-LIPSCHITZIAN MAPPINGS 被引量:5
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作者 谷峰 《Acta Mathematica Scientia》 SCIE CSCD 2011年第5期2058-2066,共9页
The purpose of this paper is to study necessary and su?cient condition for the strong convergence of a new parallel iterative algorithm with errors for two finite families of uniformly L-Lipschitzian mappings in Bana... The purpose of this paper is to study necessary and su?cient condition for the strong convergence of a new parallel iterative algorithm with errors for two finite families of uniformly L-Lipschitzian mappings in Banach spaces. The results presented in this paper improve and extend the recent ones announced by [2–7]. 展开更多
关键词 asymptotically pseudo-contractive mapping uniformly L-Lipschitzian map- ping parallel iterative algorithm
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Pseudo DNA Sequence Generation of Non-Coding Distributions Using Variant Maps on Cellular Automata
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作者 Jeffrey Zheng Jin Luo Wei Zhou 《Applied Mathematics》 2014年第1期153-174,共22页
In a recent decade, many DNA sequencing projects are developed on cells, plants and animals over the world into huge DNA databases. Researchers notice that mammalian genomes encoding thousands of large noncoding RNAs ... In a recent decade, many DNA sequencing projects are developed on cells, plants and animals over the world into huge DNA databases. Researchers notice that mammalian genomes encoding thousands of large noncoding RNAs (lncRNAs), interact with chromatin regulatory complexes, and are thought to play a role in localizing these complexes to target loci across the genome. It is a challenge target using higher dimensional tools to organize various complex interactive properties as visual maps. In this paper, a Pseudo DNA Variant MapPDVM is proposed following Cellular Automata to represent multiple maps that use four Meta symbols as well as DNA or RNA representations. The system architecture of key components and the core mechanism on the PDVM are described. Key modules, equations and their I/O parameters are discussed. Applying the PDVM, two sets of real DNA sequences from both the sample human (noncoding DNA) and corn (coding DNA) genomes are collected in comparison with two sets of pseudo DNA sequences generated by a stream cipher HC-256 under different modes to show their intrinsic properties in higher levels of similar relationships among relevant DNA sequences on 2D maps. Sample 2D maps are listed and their characteristics are illustrated under a controllable environment. Various distributions can be observed on both noncoding and coding conditions from their symmetric properties on 2D maps. 展开更多
关键词 Large Noncoding DNA Analysis Stream CIPHER HC-256 Binary to DNA pseudo DNA Sequence Visual Distribution VARIANT map
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ON THE EXISTENCE OF SOLUTIONS FOR EQUATIONS WITH ACCRETIVE MAPPINGS IN PROBABILISTIC NORMED SPACES
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作者 张石生 陈玉清 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 1990年第9期821-828,共8页
The purpose of this paper is to introduce the concept of accretive mapping in probabilistic normed space (PN space, in short) and to study the existence problem of solutions for equations with accretive mappings in PN... The purpose of this paper is to introduce the concept of accretive mapping in probabilistic normed space (PN space, in short) and to study the existence problem of solutions for equations with accretive mappings in PN space and some existence theorems are shown. 展开更多
关键词 Accretive mapping probabilistic normed space pseudo-contractive mapping
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Building reliable genetic maps: different mapping strategies may result in different maps
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作者 Yefim Ronin David Mester +1 位作者 Dina Minkov Abraham Korol 《Natural Science》 2010年第6期576-589,共14页
New high throughput DNA technologies resulted in a disproportion between the high number of scored markers for the mapping populations and relatively small sizes of the genotyped populations. Correspondingly, the numb... New high throughput DNA technologies resulted in a disproportion between the high number of scored markers for the mapping populations and relatively small sizes of the genotyped populations. Correspondingly, the number of markers may, by orders of magnitude, exceed the threshold of recombination resolution achievable for a given population size. Hence, only a small part of markers can be genuinely ordered in the map. The question is how to choose the most informative markers for building such a reliable “skeleton” map. We believe that our approach provides a solution to this difficult problem due to: a) powerful tools of discrete optimization for multilocus ordering;b) a verification procedure, which is impossible without fast and high-quality optimization, to control the map quality based on re-sampling techniques;c) an interactive algorithm of marker clustering in complicated situations caused by significant deviation of recombination rates between markers of non-homologous chromosomes from the expected 50% (referred to as quasi-linkage or pseudo-linkage);and d) an algorithm for detection and removing excessive markers to increase the stability of multilocus ordering. 展开更多
关键词 pseudo-Linkage SKELETON map map Verification map Stability TRAVELING SALESPERSON Problem Guided Evolution Strategy
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ITERATIVE PROCESS FOR CERTAIN NONLINEAR MAPPINGS WITH LIPSCHITZ CONDITION
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作者 GU Feng(谷峰) 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2001年第12期1458-1467,共10页
Using the new analysis techniques, the problem of iterative approximation of solutions of the equation for Lipschitz phi-strongly accretive operators and of fixed points for Lipschitz phi-strongly pseudo-contractive m... Using the new analysis techniques, the problem of iterative approximation of solutions of the equation for Lipschitz phi-strongly accretive operators and of fixed points for Lipschitz phi-strongly pseudo-contractive mappings are discussed. The main results of this paper improve and extend the corresponding results obtained by Chang, Chidume, Deng, Ding, Tan-Xu and Osilike. 展开更多
关键词 phi-strongly accretive operator phi-strongly pseudo-contractive mapping Ishikawa iterative sequence Mann iterative sequence
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饮用水中微生物可利用磷(MAP)的测定方法研究 被引量:10
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作者 姜登岭 鲁巍 张晓健 《给水排水》 CSCD 北大核心 2004年第4期27-31,共5页
研究细化了微生物可利用磷(MAP)的测定方法,采用配水试验得出不同磷浓度与对应浓度下生长的P17菌最大菌落数N_(max)有较好的线性关系。试验测定的MAP产率系数为1.10×10~9CFU/μg PO_4^(3-)-P,MAP测定适用范围为0.5~10μg/L(以PO_4... 研究细化了微生物可利用磷(MAP)的测定方法,采用配水试验得出不同磷浓度与对应浓度下生长的P17菌最大菌落数N_(max)有较好的线性关系。试验测定的MAP产率系数为1.10×10~9CFU/μg PO_4^(3-)-P,MAP测定适用范围为0.5~10μg/L(以PO_4^(3-)-P计)。经过分析提出MAP测定可以用第3,4天的P17菌落数最大值代替最大菌落数N_(max),减少了MAP测定工作量。对某市给水处理工艺和配水管网中MAP占总磷的百分比分析表明,微生物可利用磷与总磷并没有固定的比例关系。 展开更多
关键词 饮用水 微生物可利用磷 map 总磷 生物稳定性 生物检测 P17菌
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伪随机码相关检测的MDS-MAP定位算法 被引量:6
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作者 刘洲洲 张亚杰 《电子测量与仪器学报》 CSCD 北大核心 2017年第2期245-250,共6页
针对当前无线传感器网络超声波设备定位精度不高的问题,改进了伪随机码相关的MDS-MAP定位算法。首先利用伪随机码相关检测技术,对节点发射出的超声信号进行编码,有效地增加了节点的测距距离和测量精度。然后对于未能测量到距离的节点使... 针对当前无线传感器网络超声波设备定位精度不高的问题,改进了伪随机码相关的MDS-MAP定位算法。首先利用伪随机码相关检测技术,对节点发射出的超声信号进行编码,有效地增加了节点的测距距离和测量精度。然后对于未能测量到距离的节点使用Euclidean和最短路径融合算法进行处理,然后使用MDS-MAP算法生成节点的相对坐标,最后利用平面转换模型获取节点的最终坐标位置。仿真实验结果表明改进算法在不同网络规模和测距误差条件下均能够获得更高的定位精度和较小的定位误差。 展开更多
关键词 无线传感器网络 伪随机码检测 MDS-map算法 定位
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Pseudo-Anosov映射作用下拓扑混沌数值模拟 被引量:1
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作者 徐百平 冯彦红 +2 位作者 陈金伟 喻慧文 何亮 《化工学报》 EI CAS CSCD 北大核心 2014年第10期3861-3871,共11页
对方腔内3个方形搅拌轴两两交替运动引发的Stokes流动的混合问题进行了数值模拟研究。提出了两种搅拌轴方形运动路径来引发相空间内Pseudo-Anosov(pA)映射。采用有限体积方法求解速度场,搅拌轴的周期性速度边界借助叠加网格技术来实现... 对方腔内3个方形搅拌轴两两交替运动引发的Stokes流动的混合问题进行了数值模拟研究。提出了两种搅拌轴方形运动路径来引发相空间内Pseudo-Anosov(pA)映射。采用有限体积方法求解速度场,搅拌轴的周期性速度边界借助叠加网格技术来实现。流动区域采用交错网格划分,控制方程组采用具有二阶精度的中心差分格式离散。粒子运动前锋追踪计算采用具有四阶精度的Runge-Kutta方法实现。得到了Poincaré截面,表明pA起作用的空间尺度几乎覆盖整个方腔,只有4个角区域除外。计算了不同初始位置的示踪剂演化图像来表征混合过程。示踪剂增长将经历指数增长,其增长指数大于pA映射矩阵的预测值,这是由于搅拌轴形状、运动路径等流场细节导致的示踪剂界面局部二次折叠拉伸造成的。 展开更多
关键词 流动 混合 数值模拟 pseudo-Anosov映射 拓扑混沌 叠加网格技术
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