Computational Science Stack Exchange is a question and answer site for scientists using computers to solve scientific problems. It only takes a minute to sign up.

Sign up to join this community

Anybody can ask a question

Anybody can answer

The best answers are voted up and rise to the top

Explore our Questions

Ask Question

more tags

Active Hot Week Month

3

votes

1

answer

58

views

Lanczos algorithm for finding top eigenvalues of a matrix sum

linear-algebra python eigenvalues scipy numpy

modified yesterday nicoguaro♦ 6,394

3

votes

0

answers

42

views

Check if LinearOperator is symmetric

linear-algebra scipy

modified 2 days ago nicoguaro♦ 6,394

1

vote

0

answers

73

views

Numerical Range of a matrix in Python

linear-algebra python eigenvalues

modified Apr 1 at 15:21 nicoguaro♦ 6,394

14

votes

3

answers

2k

views

Why is my parallel solver slower than my sequential solver?

linear-algebra petsc

modified Apr 1 at 9:19 zhanghaoyuan 1

1

vote

3

answers

144

views

Linear solver recommendation(s) for small problems

linear-algebra numerics linear-solver

modified Mar 31 at 1:08 Charlie S 506

2

votes

1

answer

154

views

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

linear-algebra complexity

modified Mar 29 at 23:59 nkyraf33 53

2

votes

0

answers

58

views

Software for solving large systems of linear equations over gf(2)

linear-algebra sparse-matrix software-recommendation

modified Mar 24 at 20:19 nicoguaro♦ 6,394

-1

votes

1

answer

32

views

Interpretation of error between Hessian approximation and real Hessian - Quasi-Newton Method

linear-algebra optimization quasi-newton

answered Mar 20 at 10:09 Federico Poloni 6,922

-2

votes

1

answer

65

views

Forward Euler Adaptive Step Size Stability

linear-algebra numerics eigensystem

answered Mar 18 at 21:54 Laurent90 862

4

votes

2

answers

3k

views

A numerical GMRES example

linear-algebra krylov-method gmres

modified Mar 17 at 6:06 Fredrick Asenso Wireko 1

13

votes

1

answer

1k

views

How is Krylov-accelerated Multigrid (using MG as a preconditioner) motivated?

linear-algebra linear-solver multigrid krylov-method

modified Mar 14 at 18:28 Patrick Sanan 808

7

votes

3

answers

410

views

Accurate Way to Calculate Matrix Powers and Matrix Exponential for Sparse Positive Semidefinite Matrices

linear-algebra python matrix matrix-factorization

modified Mar 1 at 20:59 Cupitor 173

0

votes

1

answer

64

views

Solve for large array of PD matrices

linear-algebra python linear-solver matrix-factorization

modified Feb 24 at 16:02 Community♦ 1

2

votes

0

answers

41

views

How to solve this boundary value problem which has more unknown than equation on MATLAB

linear-algebra matlab finite-difference matrix boundary-conditions

asked Feb 14 at 12:52 Mechasteel 21

Browse more Questions

Computational Science Stack Exchange works best with JavaScript enabled