Wikipedia:Files for deletion/Replaceable fair use/File:Calabi-Yau.jpeg


 * The following discussion is an archived debate of the proposed deletion of a fair use image as a replaceable image. Please do not modify it. 

The result was to delete the image.

Unlike the creative "artist's rendering" of a CY manifold found on the CY page as of 7/21/07, this image is the output of a couple lines of mathematica code. The physicist who created the original image posted the code for its generation on his website, and any computer literate string theorist would be able to recreate the image. This image is as fair use as it gets, on the level of a plot of a parabola. Rpchase 16:41, 21 July 2007 (UTC)

Doesn't this qualify as a non-copyright work? Saying it's a screenshot of a computer program is like saying that microsoft owns the copyright on everything produced from MS Word.


 * Yes, this particular image would fair use, but it could be replaced by a free image, and our policy is that any replaceable fair use image should be replaced. It is quite more difficult to make than a parabola graph, and the choice of colors and angles might be considered artistic. &mdash; Carl (CBM · talk) 19:29, 21 July 2007 (UTC)


 * I don't know how to make this image, but someone does (or this image couldn't have been made in the first place). Therefore the image is replaceable. – Quadell (talk) (random) 02:54, 24 July 2007 (UTC)
 * ''The above discussion is preserved as an archive of the debate. Please do not modify it.

The following text was copied from the image description page. – Quadell (talk) (random) 23:20, 24 July 2007 (UTC)


 * Comment re "replaceable fair use". This image is a graph of a certain parameterized surface using Mathematica. The creator has given some instructions on how to recreate it, and I am confident is can be recreated. We only use nonfree images when they cannot be replaced by free ones; ease of replacement is not a factor that our nonfree image policy considers.


 * Short description: Calabi-Yau manifold (3D projection made with Mathematica)


 * Author: Andrew J. Hanson


 * Source: physicsweb.org