Podcast #128: We chat with Kent C Dodds about why he loves React and discuss what life was like in the dark days before Git. Listen now.

 12 Linear programming with matrix constraints 10 Solving linear system of the form $ABx=b$ 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 (2,763)

 +95 Does a symmetric positive definite matrix also have $\mathbf{A} = \mathbf{L}^T\mathbf{L}$ (where $\mathbf{L}$ is a lower triangular matrix)? +65 Computing square root of diag(u)-uu'? +10 Linear programming with matrix constraints +10 Efficiently computing the product of a multi-dimensional matrix (or tensor) and vectors

### Questions (12)

 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 (64)

 37 linear-algebra × 13 15 reference-request × 2 31 matrix × 6 14 preconditioning × 9 30 optimization × 10 13 pde × 3 21 linear-solver × 3 13 sparse-matrix × 2 20 convex-optimization × 4 12 lapack × 2