Timeline for Is there a Krylov subspace method for solving D+epsilon*S where D is diagonal, epsilon small and S skew-symmetric
Current License: CC BY-SA 3.0
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| when toggle format | what | by | license | comment | |
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| Oct 10, 2012 at 18:19 | comment | added | David Ketcheson | I recommend asking this question on scicomp.stackexchange.com. | |
| Sep 21, 2012 at 19:09 | comment | added | Andrew T. Barker | How large is your system? Where does it come from? I don't understand your second paragraph; if $ \epsilon = 0 $ don't you just have a diagonal matrix? Since $ D + \epsilon S $ is a small perturbation of a diagonal matrix, I would expect a very simple scheme like Jacobi or Gauss-Seidel to converge fairly quickly. To be a little more sophisticated you could try diagonally preconditioned GMRES. Finally, you might get more answers at scicomp.stackexchange.com | |
| Sep 21, 2012 at 14:50 | history | asked | Nat Trask | CC BY-SA 3.0 |