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It seems that I deleted accidentally the category. It was a mistake. Mariostorti 15:32, 21 May 2006 (UTC)

Don't worry about it, mistakes like this happen all the time. -- Jitse Niesen (talk) 03:21, 22 May 2006 (UTC)[edit]

??? [xissburg 00:44, 23 March 2010 (UTC)] —Preceding unsigned comment added by Xissburg (talkcontribs)


There should be a diagram showing the quadratic form of a matrix with and without preconditioning and the path of an iterative solver in those cases. —Ben FrantzDale 22:17, 19 January 2007 (UTC)

Quadratic form[edit]

The statement about making quadratic form of a symmetric operator seems kinda redundant to me. Kallikanzarid (talk) 07:42, 22 February 2010 (UTC)

Preconditioning for linear systems section[edit]

I think that multiplying by preconditioners in a matrix free fashion is a detail that's not very important to understanding what a preconditioner is. It's a bit of a distraction and shouldn't be in the first paragraph. — Preceding unsigned comment added by (talk) 23:07, 13 March 2013 (UTC)