# User talk:Jebix

## Image:B747400 Construction.jpg listed for deletion

Dear uploader: The media file you uploaded as Image:B747400 Construction.jpg has been listed for speedy deletion because you selected a copyright license type implying some type of restricted use, such as for non-commercial use only, or for educational use only or for use on Wikipedia by permission. While it might seem reasonable to assume that such files can be freely used on Wikipedia, a non-profit website, this is in fact not the case. Please do not upload any more files with these restrictions on them, because content on Wikipedia needs to be compatible with the GNU Free Documentation License, which allows anyone to use it for any purpose, commercial or non-commercial.

If you created this media file and want to use it on Wikipedia, you may re-upload it (or amend the image description if it has not yet been deleted) and use the license {{GFDL-self}} to license it under the GFDL, or {{cc-by-sa-2.5}} to license it under the Creative Commons Attribution-ShareAlike license, or use {{PD-self}} to release it into the public domain.

If you did not create this media file but want to use it on Wikipedia, there are two ways to proceed. First, you may choose one of the fair use tags from this list if you believe one of those fair use rationales applies to this file. Second, you may want to contact the copyright holder and request that they make the media available under a free license.

If you have any questions please ask at Wikipedia:Media copyright questions. Thank you. Sherool (talk) 15:32, 4 March 2007 (UTC)

## Hermite Matrix

Saw your very appropriate query of nearly a year ago on the relevance of reduced row-echelon form to upper triangular matrices, in Talk: row-echelon matrix. Indeed, the Hermite matrix was defined incorrectly: when lower rows of zeros are appended to a reduced row-echelon matrix, one creates a very special upper triangular matrix: the Hermite matrix. The difference between it and the identity matrix, I-H, is a matrix whose columns are the solution set of the homogenous set of linear equations Ax=0. This is only one way of solving this set of equations, but it's attractive because the proof that it is a solution can be given in the algorithm. I've left it to mathematicians to correct the article. Geologist (talk) 01:24, 17 March 2008 (UTC)