### Answers (38)

 12 Solving linear system of the form $ABx=b$ 12 Linear programming with matrix constraints 9 Fast explicit solution for $\mathbf{A}\mathbf{x} = \mathbf{b}$, $\mathbf{b} \in \mathbf{R}^3$, low condition number 9 Fast vector - “diagonal” matrix multiplication 9 Extracting diagonal of an approximately diagonal matrix when we don't know its entries

### Reputation (2,883)

 +40 Pade-like approximation, but force poles to be negative +10 Calculating the log-determinant of a large sparse matrix +10 Understanding the conditions for which ADMM can be applied +10 Solving linear system of the form $ABx=b$

### Questions (13)

 16 Finding which triangles points are in 15 Is there any way to do “double preconditioning” 9 Guidelines for nested preconditioners 8 Why does conjugate gradient work with this nonsymmetric preconditioner? 8 Extracting diagonal of an approximately diagonal matrix when we don't know its entries

### Tags (66)

 38 linear-algebra × 13 17 sparse-matrix × 2 33 matrix × 6 15 reference-request × 2 31 optimization × 10 14 preconditioning × 9 23 linear-solver × 3 13 pde × 3 21 convex-optimization × 4 12 lapack × 2

### Bookmarks (30)

 36 Symbolic software packages for Matrix expressions? 28 Conservation of a physical quantity when using Neumann boundary conditions applied to the advection-diffusion equation 26 What is the purpose of using integration by parts in deriving a weak form for FEM discretization? 23 Can diagonal plus fixed symmetric linear systems be solved in quadratic time after precomputation? 21 Diagonal update of a symmetric positive definite matrix

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