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检索条件:"关键词=离散格林函数 "
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四阶奇异摄动边值问题在自适应网格上的一致收敛分析被引量:1
《高等学校计算数学学报》2003年第4期344-350,共7页岑仲迪 高怀毅 
1 引言 我们考虑一类广泛应用于力学的奇异摄动边值问题 Lu:≡-ε2u(4)-(a(x)u)"=f(x) x∈(0,1) (1)
关键词:四阶奇异摄动边值问题 自适应网格 一致收敛性 差分格式 离散格林函数 有限元方法 
一类四阶常微分方程奇异摄动问题的有限元方法
《上海水产大学学报》1996年第4期252-266,共15页周亚虹 郑奕 
关键词:离散格林函数 奇异摄动 常微分方程 有限元法 
Decay estimates of discretized Green's functions for Schrdinger type operators
《Science China Mathematics》2016年第8期1561-1578,共18页LIN Lin LU Jianfeng 
supported by Laboratory Directed Research and Development Funding from Berkeley Lab;provided by the Director,Office of Science,of the US Department of Energy(Grant No.DE-AC02-05CH11231);the Alfred P Sloan Foundation;the DOE Scientific Discovery through the Advanced Computing Program;the DOE Center for Applied Mathematics for Energy Research Applications Program;the National Science Foundation of USA(Grant Nos.DMS-1312659 and DMS-1454939)
For a sparse non-singular matrix A, generally A- 1 is a dense matrix. However, for a class of matrices, A-1 can be a matrix with off-diagonal decay properties, i.e., |Aij^-1| decays fast to 0 with respect to the inc...
关键词:decay estimates Green's function SchrSdinger operator finite difference discretization pseudo-spectral discretization 
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