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I am a new graduate majoring in matrix computations, mainly studying Krylov subspace iterative methods and preconditioning techniques. and saddle point problems.

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  • Nanjing, China
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Top posts (34) All Questions Answers | Votes Newest

7 Does a symmetric positive definite matrix also have $\mathbf{A} = \mathbf{L}^T\mathbf{L}$ (where $\mathbf{L}$ is a lower triangular matrix)? Nov 5
3 What is the **contraction factor and convergence factor** of a iteration method? Nov 21
3 Are there any other better methods than block diagnoal and block upper triangular precondtioner for saddle point problems? Nov 25
3 Why do many people use FDM method to solve Stokes equations, i.e., saddle point matrix? Sep 5
3 How to use matlab command 'fft' to solve Ax=b arising from Poisson equation? Oct 30
3 Does the k-th approximate solution of a stationary iteration belong to the k-th Krylov subspace? Dec 5
2 Why Krylov subspace iterative methods are faster than classical iteration? Dec 4
2 What's wrong with the **PCG and MINRES** in matlab? Dec 9
2 How to understand the choice of Krylov subspace orthonormal basis? 2 days ago
2 Why MATLAB chooses the Householder in its built-in function gmres.m? 12 hours ago
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