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Inverting really big symmetric block matrix

linear-algebra matrix sparse-matrix

answered 2 days ago Brian Borchers 15.3k

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2

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51

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Why Householder transformation can not be chosen to be an identity matrix?

linear-algebra householder matrix-computation

modified 2 days ago Rainer P. 316

2

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102

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Efficient ways to numerically evaluate matrix exponentials

linear-algebra python matrix eigensystem

answered Jan 17 at 19:42 Alone Programmer 1,225

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30

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Determinant of a matrix after removing or adding lines and columns

linear-algebra

answered Jan 17 at 7:57 Federico Poloni 4,784

3

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47

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Levinson Recursion for Non Square Toeplitz Matrices

linear-algebra linear-solver linear-system convolution toeplitz

modified Jan 17 at 6:58 Royi 278

30

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why is Av+Bv faster than (A+B)*v?

linear-algebra matlab matrix

modified Jan 16 at 15:42 Brian Borchers 15.3k

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52

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Can Representation Theory be studied computationally / numerically?

linear-algebra reference-request

asked Jan 14 at 8:08 user33821 19

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52

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Solution method of nonlinear heat transfer analysis

linear-algebra nonlinear-equations heat-transfer

answered Jan 14 at 2:34 helloworld922 186

5

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140

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Complex differentiation of linear solvers

linear-algebra linear-solver numerics iterative-method complex-analysis

modified Jan 13 at 19:31 EMP 1,267

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82

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Trying to understand splitting-based iterative method for 2D Laplace problem

linear-algebra iterative-method

modified Jan 13 at 18:52 Drake Mannis 41

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35

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Avoid matrix multiplication in algebraic multigrid method

linear-algebra performance multigrid

asked Jan 12 at 21:25 vydesaster 509

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46

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Numerical methods. MDF (ILU) implementation

linear-algebra sparse-matrix matrix-factorization krylov-method

asked Jan 11 at 11:02 Anya 21

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86

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Null space for smoothed aggregation algebraic multigrid

linear-algebra reference-request multigrid

modified Jan 6 at 16:50 Anton Menshov♦ 6,729

5

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115

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Fastest way to calculate the $2$-norm (or an upper bound for the $2$-norm) of the inverse of a matrix $A\in \mathbb{C}^{N\times N}$

linear-algebra matrix eigenvalues efficiency l2-norm

modified Jan 3 at 19:57 Anton Menshov♦ 6,729

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