Talk:Jordan normal form

The description of the Jordan normal form is ambigous. Maybe put in something like

${\begin{pmatrix}\lambda &1&0&\cdots &0\\0&\ddots &\ddots &&\vdots \\\vdots &\ddots &\ddots &\ddots &0\\\vdots &&\ddots &\ddots &1\\0&\cdots &\cdots &0&\lambda \end{pmatrix}}$

Mathias de Riese 10:06, 20 May 2004 (UTC)

Segre characteristic/type/notation

There should be some mention of the Segre notation/type/characteristic as a quick means of seeing what the matrix looks like without writing out the whole thing. ---Mpatel (talk) 07:10, August 11, 2005 (UTC)

JohnCreighton_@hotmail.com -what does $\oplus$ denote?

I had given an incorrect link to the page on Sumset, which is denoted by that operator. But Dysprosia rightly removed it. However, Dysprosia doesn't feel like enlightening us as to what $\oplus$ means... Fresheneesz 04:33, 8 February 2006 (UTC)

No, I don't feel like enlightening you as to what it means, as it is mentioned in the article "The way the normal form is usually written is explicitly as the direct sum of block square matrices, known as Jordan blocks." I've tried to draw attention to it a little closer. Dysprosia 04:46, 8 February 2006 (UTC)

Jordan form notation

The article needs a explanation of the jordan form notation. A newbie who is reading the article can't figure out what's the difference between a $J_{2}(4)$ and a $J_{4}(4)$. --Mecanismo 12:00, 27 November 2005 (UTC)

Editorial suggestion

The article has this portion of text:

"of the 19th and early 20th-century French mathematician Camille Jordan"

There is no need to include details on the life of Camille Jordan in the Jordan normal form article. If a user wishes to learn more about Camille Jordan, he can simply click on the wiki-link to Camille Jordan's biography, which is available in the beginnig of the article and where he will be able to access information on that subject.

So, having that in mind, I propose that, for the sakes of brevity, that piece of text is substituted with "of Camille Jordan". --Mecanismo 17:00, 27 November 2005 (UTC)

Uniqueness

Nothing is said about the uniqueness of the Jordan Normal form.