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1

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72

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Efficient change of basis real positive definite symmetric matrix

linear-algebra blas

answered Oct 13 at 16:23 rchilton1980 3,726

0

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0

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61

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Ill-conditioned stiffness matrix

linear-algebra finite-element numerics c++ stiffness

modified Oct 7 at 17:33 spyros 323

1

vote

1

answer

79

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Jacobi iterative method

linear-algebra matrix eigenvalues scilab abstract-algebra

modified Sep 28 at 14:35 Anton Menshov♦ 7,785

3

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0

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81

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Inverse problem with uncertain forward operator

linear-algebra optimization inverse-problem

modified Sep 24 at 17:05 Ron 583

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0

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25

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Multiplying by E[xy'] where only some statistics of xy' are known

linear-algebra matrix-equations

modified Sep 24 at 16:44 Yaroslav Bulatov 615

4

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1

answer

114

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When is it easy to invert a sparse matrix?

linear-algebra linear-solver sparse-matrix iterative-method reference-request

modified Sep 23 at 18:11 Yaroslav Bulatov 615

2

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1

answer

85

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Ill-condioned Linear System and Gaussian Elimination

linear-algebra numerics condition-number

modified Sep 20 at 6:22 Federico Poloni 6,111

2

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1

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40

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Solving MX=N where M is structured as a Gaussian 4th-moment tensor

linear-algebra linear-solver matrix-equations

answered Sep 20 at 6:19 Federico Poloni 6,111

3

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2

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154

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1D FEM for nonlinear diffusion coefficient

linear-algebra finite-element parabolic-pde linear-system

modified Sep 19 at 11:14 Vefhug 187

3

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1

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89

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Efficient solution to a structured symmetric linear system with condition number estimation

linear-algebra linear-solver eigenvalues householder

modified Sep 17 at 1:25 vibe 729

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0

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45

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Norm estimates if adjoints can't be computed

linear-algebra numerics

asked Sep 14 at 12:59 Dirk 1,619

6

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2

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319

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Does right-hand side influence convergence rate of a Krlylov subspace method?

linear-algebra iterative-method

modified Sep 4 at 14:41 Anton Menshov♦ 7,785

5

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1

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345

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Cheap recalculation of eigenvalues and eigenvectors for a low-rank update of the matrix

linear-algebra algorithms eigenvalues

modified Sep 3 at 18:47 Anton Menshov♦ 7,785

2

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1

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54

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Runtime of Gaussian elimination/row reduction on an $m \times n$ matrix

linear-algebra complexity

answered Aug 31 at 12:46 Federico Poloni 6,111

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