19:19, 19 December 2008Army1987talkcontribs uploaded File:Checkerboard gamma test.png(((Information |Description=A gamma test: the uniform squares should have the same brightness as the surrounding dither. Doesn't work well on CRT displays because they have problems with the checkered pattern. |Source=I created this work entirely by myself)
23:54, 21 January 2008Army1987talkcontribs uploaded a new version of File:ExtremeValueTheorem.png(A continuous function, showing the extreme value theorem. The maximum is shown in green and the minimum in blue. I generated it with this Python script: <source lang="Python"> #!/usr/bin/python from random import * k = 0 for i in range(100000): k +=)
15:45, 18 January 2008Army1987talkcontribs uploaded File:Lipschitz continuity.png(((Information |Description=A Lipschitz continuous function. There is a double cone (shown in green) whose vertex can be translated along the graph of the function, so that the graph will always be entirely within the cone. |Source=self-made |Date= |Locat)
10:38, 13 May 2007Army1987talkcontribs uploaded File:Il sogno del menestrello.ogg (== Summary == Excerpt from "Il sogno del menestrello", from the album ''Acqua e terra'' by the Italian folk band I ratti della Sabina. This is a low quality (64 Kbps) rendering of a short sample from the song, used for demonstration only. It's 23)
14:21, 9 February 2007Army1987talkcontribs uploaded File:Tricorn.png(The tricorn (a fractal similar to the Mandelbrot set), plotted in the area [−2, 2) × [−2, 2). The value of each pixel equals 255 minus the number of iterations needed before the absolute value of z becomes larger than 2, calculated at the upper left)
11:45, 9 February 2007Army1987talkcontribs uploaded File:Tricorn.png(The tricorn (a fractal similar to the Mandelbrot set), plotted in the area [−2, 2] × [−2, 2]. The value of each pixel equals 255 minus the number of iterations needed before the absolute value of ''z'' becomes larger than 2, calculated at the upper l)
18:42, 8 February 2007Army1987talkcontribs uploaded File:Srgbnonlinearity.png(Three solid squares surrounded by dithers which, in the sRGB color system, should be equally bright. The first square has linear brightess of 0.25 and is surrounded by a dither of 0 and 0.5; the second one is 0.5 and is surrounded by 0 and 1; the last is)
21:08, 29 October 2006Army1987talkcontribs uploaded File:I Ratti Della Sabina - Chi arriva prima aspetta.ogg (Sample of "Chi arriva prima aspetta" from the 2005 album ''A passo lento'' by the Italian folk rock band I Ratti Della Sabina. The length of the sample, 23.6 s, equals 10% of the length of the song (3 min 56 s). Encoded with Variable Bitrate Ogg Vorbi)
20:19, 29 October 2006Army1987talkcontribs uploaded File:I Ratti Della Sabina - La morale dei briganti.ogg (Sample of "La morale dei briganti" from the 2003 album ''Circobirò'' by the Italian folk rock band I Ratti della Sabina. The length of the sample, 28.8 s, equals 10% of the length of the song (4 min 48 s). Encoded with Variable Bitrate Ogg Vorbis at)
21:13, 20 October 2006Army1987talkcontribs uploaded File:I Ratti Della Sabina - Il funambolo.ogg (Sample from the song "Il funambolo", from the album ''Cantiecontrocantincantina'' by the Italian folk band I Ratti Della Sabina. Duration of the sample is 29.6 s, equal to 10% of the whole song (4 min 56 s). Encoded at nominal 64 kbps Variable Bitrate)
20:26, 20 October 2006Army1987talkcontribs uploaded File:Il sogno del menestrello.ogg (Excerpt from "Il sogno del menestrello", from the album ''Acqua e terra'' by the Italian folk band I ratti della Sabina. The full song in MP3 at 128 kbps on the site of the band, at http://www.rattidellasabina.it/audio/il_sogno_del_menestrello.mp3)
12:40, 23 September 2006Army1987talkcontribs uploaded File:Srgbspectrum.png(Spectrum of visible light, rendered in sRGB, so that the relative luminances are respected. The CIE 2° color matching functions were taken from http://cvrl.ioo.ucl.ac.uk/, and the conversion from XYZ to sRGB from http://www.srgb.com/basicsofsrgb.htm. I n)
13:41, 25 April 2006Army1987talkcontribs uploaded File:Poincarejokeconvergentseries.png(Graph of the convergents of the series ∑(40<sup>''n''/''n''!) and ∑(''n''!/40<sup>''n''). Poincaré joked that a mathematician call the former convergent and the latter divergent, but an astronomer would label them the other way round. ~~~~)
10:42, 10 September 2005Army1987talkcontribs uploaded File:Siae.png (The SIAE (''Società Italiana degli Autori ed Editori'', "Italian society of authors and editors") stamp, to be sticked on any medium containing copyrighted software, sounds, or motion pictures sold in Italy. I scanned this stamp from a music)