国家自然科学基金(10971075)

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相关作者:孙丽英陈小山更多>>
相关机构:广东金融学院华南师范大学更多>>
相关期刊:《数学的实践与认识》《华南师范大学学报(自然科学版)》《Numerical Mathematics(Theory,Methods and Applications)》《Applied Mathematics(A Journal of Chinese Universities)》更多>>
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对称不定系统的一类预处理子的注记
《数学的实践与认识》2014年第23期242-246,共5页孙丽英 
国家自然科学基金(10971075);广东省自然科学基金(7004344);2013广东省高等教育"创新强校工程"专项资助项目
由于对称正定系统已有很多有效的求解方法,因此将对称的、或者非对称的不定系统转化为对称正定系统就成为解决这类问题的方法之一构造了一类简洁有效的预处理子,将对称不定系统转化为对称正定型,研究了所得预处理系统的谱性质,估计了其...
关键词:对称不定系统 对称正定系统 预处理 谱性质 条件数 
The coninvolutory decomposition and its computation for a complex matrix
《Applied Mathematics(A Journal of Chinese Universities)》2013年第3期303-310,共8页CHEN Xiao-shan 
Supported by the Natural Science Foundation of Guangdong Province(91510631000021,s2012010009985);Research Fund for the Doctoral Program of Higher Education of China(20104407110001);the National Natural Science Foundation of China(11271144,10971075,and 11101164)
A complex, square matrix E is called coninvolutory if EE = I, where E denotes complex conjugate of the matrix E and I is an identity matrix. In this paper we introduce the coninvolutory decomposition of a complex matr...
关键词:coninvolutory decomposition Newton iteration spectral norm. 
On Multivariate Markov Chains for Common and Non-Common Objects in Multiple Networks
《Numerical Mathematics(Theory,Methods and Applications)》2012年第3期384-402,共19页Xutao Li Wen Li Michael K.Ng Yunming Ye 
supported in part by National Natural Science Foundations of China(Nos.10671077,10971075);Research Fund for the Doctoral Program of Higher Education of China(No.20104407110002);Guangdong Provincial Natural Science Foundations,P.R.China(No.9151063101000021);supported in part by NSFC under Grant no.61073195,Shenzhen Science and Technology Program under Grant no.CXB201005250024A and ZD201006100018A;Natural Scientific Research Innovation Foundation in HIT under Grant no.HIT.NSFIR.2010128.
Node importance or centrality evaluation is an important methodology for network analysis.In this paper,we are interested in the study of objects appearing in several networks.Such common objects are important in netw...
关键词:transition probability multivariate Markov chains stationary probability distribution IRREDUCIBLE multiple networks 
半正定极因子在酉不变范数下的绝对与相对扰动界
《华南师范大学学报(自然科学版)》2010年第3期1-3,共3页陈小山 
国家自然科学基金资助项目(10971075);广东省自然科学基金资助项目(91510631000021)
设A=QH是矩阵ACm×n的极分解,其中Q*Q=I,I为n阶单位矩阵,H为n阶Hermite半正定矩阵.给出了任意扰动下Hermite半正定极因子在酉不变范数下的绝对与相对扰动界.对于满秩矩阵,绝对与相对扰动界具有最优性质.
关键词:极分解 酉不变范数 绝对与相对扰动界 
A note for preconditioning nonsymmetric matrices
《Applied Mathematics(A Journal of Chinese Universities)》2010年第1期93-100,共8页CHEN Xiao-shan LI Wen School of Mathematics, South China Normal University, Guangzhou 510631, China 
Supported by the Natural Science Foundation of Guangdong Province (06025061, 91510224000002);the National Natural Science Foundation of China (10971075, 10671077);the State Key Laboratory of Scientific and Engineering Computing
In this paper, we consider preconditioners for generalized saddle point systems with a nonsymmetric coefficient matrix. A constraint preconditioner for this systems is constructed, and some spectral properties of the ...
关键词:PRECONDITIONER saddle point matrix minimal polynomial Schilder's factorization. 
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