Wikipedia:Featured article candidates/Euclidean algorithm/archive1: Difference between revisions

Revision as of 23:09, 29 April 2009

Revision as of 01:11, 30 April 2009

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:::Ancient Greeks considered numerical concepts mainly in terms of geometric constructions ala ruler and compass and that is how Euclid's treatment of commensurability goes. This is certainly not the way modern mathematicians think of them. Sure the ancient Greeks knew of some irrational numbers, but they certainly didn't know "e" or many other irrational numbers that are not constructible. So their concept of irrational number was far more limited than our modern understanding, even when one limits the concept of real number to mean "set of rational and irrational numbers". Even on the math where modern and ancient understanding would seem to overlap, it's clear the ancient Greeks just had a different way of thinking about it, so in a metaphysical sense, you could argue that the objects are really different. --[[User:C S|C S]] ([[User talk:C S|talk]]) 20:40, 27 April 2009 (UTC)

;<s>Oppose on criterion 3</s>

*<s>[[:File:Gabriel-Lamé.jpeg]] - There is no source, date, or author for this image that would lead us to believe that it is in the PD. We need to be able to verify that it is in the PD. More research on this image needs to be done.</s>

*<s>[[:File:Dedekind.jpeg]] - The website for this image does not indicate the 1870 date and we have no name or death date for the photographer, so we cannot verify the PD license listed. More research on this image needs to be done.</s>

These issues should relatively easy to resolve. I look forward to reading the entire article. [[User:Awadewit|Awadewit]] ([[User talk:Awadewit|talk]]) 21:13, 27 April 2009 (UTC)

::Unfortunately, despite a diligent search, I have not been able to verify the copyright status of either image. Both were taken around 1870 (roughly 140 years ago) and both are widely distributed on the Internet. However, it is conceivable that the original photographer died less than 70 years ago, or that the photographs themselves were not published until more recently. I found a [http://www.annales.org/archives/x/lame.html#discours similar image of Lamé published in 1897], but the Ecole polytechnique [http://www.annales.org/archives/images/x/ asserts its unrestricted copyrights]. I found an alternative photograph of Dedekind published in 1930 in Braunschweig as part of his ''Collected Works''; however, I cannot verify that it is out of copyright, either. I'll remove the images for now, pending a fuller investigation. They're not essential. [[User:Proteins|Proteins]] ([[User talk:Proteins|talk]]) 02:45, 29 April 2009 (UTC)

:::Ah, good news! We can use the Lame picture from 1897 then. It doesn't matter if Ecole Polytechnique claims copyright; US copyright law is what Wikipedia requires us to follow and that means the picture is considered in the public ___domain in the US (see [[Wikipedia:Public_domain]]). --[[User:C S|C S]] ([[User talk:C S|talk]]) 04:42, 29 April 2009 (UTC)

::::We can use the the French Lamé. As CS explains, it is acceptable under US copyright law. You can upload it to the English Wikipedia. [[User:Awadewit|Awadewit]] ([[User talk:Awadewit|talk]]) 01:11, 30 April 2009 (UTC)

;Lack of citations?