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中国科学院数学与系统科学研究院机构知识库
KMS Of Academy of mathematics and systems sciences, CAS
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A Weak Galerkin Finite Element Method Can Compute Both Upper and Lower Eigenvalue Bounds
期刊论文
JOURNAL OF SCIENTIFIC COMPUTING, 2022, 卷号: 93, 期号: 1, 页码: 21
Authors:
Liang, Qigang
;
Xu, Xuejun
;
Yuan, Liuyao
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View/Download:26/0
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Submit date:2023/02/07
Eigenvalue problems
Upper and lower bound
Weak Galerkin method
High accuracy
A TWO-LEVEL PRECONDITIONED HELMHOLTZ-JACOBI-DAVIDSON METHOD FOR THE MAXWELL EIGENVALUE PROBLEM
期刊论文
MATHEMATICS OF COMPUTATION, 2022, 卷号: 91, 期号: 334, 页码: 623-657
Authors:
Liang, Qigang
;
Xu, Xuejun
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View/Download:103/0
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Submit date:2022/04/29
Maxwell eigenvalue problem
edge element
Helmholtz projection
Jacobi-Davidson method
domain decomposition
A Positivity-Preserving Finite Volume Scheme with Least Square Interpolation for 3D Anisotropic Diffusion Equation
期刊论文
JOURNAL OF SCIENTIFIC COMPUTING, 2021, 卷号: 89, 期号: 3, 页码: 25
Authors:
Xie, Hui
;
Xu, Xuejun
;
Zhai, Chuanlei
;
Yong, Heng
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View/Download:77/0
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Submit date:2022/04/02
Anisotropic diffusion
Positivity
Vertex unknowns
Least square
A Rigorous Condition Number Estimate of an Immersed Finite Element Method
期刊论文
JOURNAL OF SCIENTIFIC COMPUTING, 2020, 卷号: 83, 期号: 2, 页码: 23
Authors:
Wang, Saihua
;
Wang, Feng
;
Xu, Xuejun
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View/Download:111/0
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Submit date:2020/06/30
Interface problem
IFE method
Condition number
Continuous interior penalty finite element methods for the time-harmonic Maxwell equation with high wave number
期刊论文
ADVANCES IN COMPUTATIONAL MATHEMATICS, 2019, 页码: 27
Authors:
Lu, Peipei
;
Wu, Haijun
;
Xu, Xuejun
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View/Download:122/0
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Submit date:2020/05/24
Time-harmonic Maxwell equation
High wave number
Continuous interior penalty finite element method
Error estimates
A Robust Multilevel Preconditioner Based on a Domain Decomposition Method for the Helmholtz Equation
期刊论文
JOURNAL OF SCIENTIFIC COMPUTING, 2019, 卷号: 81, 期号: 1, 页码: 291-311
Authors:
Lu, Peipei
;
Xu, Xuejun
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View/Download:98/0
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Submit date:2019/10/28
Multilevel method
Helmholtz equation
High wave number
Continuous interior penalty finite element method
GMRES method
Overlapping domain decomposition method
ON THE CONVERGENCE OF A TWO-LEVEL PRECONDITIONED JACOBI-DAVIDSON METHOD FOR EIGENVALUE PROBLEMS
期刊论文
MATHEMATICS OF COMPUTATION, 2019, 卷号: 88, 期号: 319, 页码: 2295-2324
Authors:
Wang, Wei
;
Xu, Xuejun
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View/Download:135/0
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Submit date:2020/01/10
Jacobi-Davidson method
eigenvalue problems
domain decomposition method
AN OPTIMIZED SCHWARZ METHOD WITH RELAXATION FOR THE HELMHOLTZ EQUATION: THE NEGATIVE IMPACT OF OVERLAP
期刊论文
ESAIM-MATHEMATICAL MODELLING AND NUMERICAL ANALYSIS-MODELISATION MATHEMATIQUE ET ANALYSE NUMERIQUE, 2019, 卷号: 53, 期号: 1, 页码: 249-268
Authors:
Liu, Yongxiang
;
Xu, Xuejun
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View/Download:113/0
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Submit date:2020/01/10
optimized Schwarz method
the Helmholtz equation
overlapping size
A monotone finite volume method for time fractional Fokker-Planck equations
期刊论文
SCIENCE CHINA-MATHEMATICS, 2019, 卷号: 62, 期号: 4, 页码: 783-794
Authors:
Jiang, Yingjun
;
Xu, Xuejun
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View/Download:120/0
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Submit date:2020/01/10
time fractional Fokker-Planck equations
finite volume methods
monotone convergence
A Positivity-Preserving Finite Volume Scheme for Heat Conduction Equation on Generalized Polyhedral Meshes
期刊论文
COMMUNICATIONS IN COMPUTATIONAL PHYSICS, 2018, 卷号: 24, 期号: 5, 页码: 1375-1408
Authors:
Xie, Hui
;
Xu, Xuejun
;
Zhai, Chuanlei
;
Yong, Heng
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View/Download:134/0
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Submit date:2019/03/05
Heat conduction
anisotropic diffusion tensor
distorted mesh
positivity-preserving
cell-centered scheme
vertex elimination