Portal:Mathematics/Selected picture

This is the collection of pictures that are being randomly selected for display on Portal:Mathematics. (This system replaces the previous "Featured picture" system that was in use until March 2014.)

To add a new image:
 * 1) Edit any existing subpage in the list below (link in upper-left corner of box) and copy its wikicode.
 * 2) Select the first non-existing subpage listed below (shown as a "redlink") to start editing that subpage, and paste the wikicode you just copied.
 * 3) * If there is no "redlink" at the bottom of the list, edit this page and look for the code . Increase nn by 2 (so there will still be a redlink after you create one new supage) and save the page.
 * 4) Change all the relevant template parameters, as necessary.
 * 5) * Note that the value of the  parameter is used as the image's "alt text" and so should describe the appearance of the image as if explaining it to someone who cannot see it. You need not use a complete, grammatically correct sentence for this (e.g., "animation of blah" can be used instead of "This is an animation of blah.").
 * 6) * The  parameter is displayed as a paragraph of text below the image and should use complete, grammatically correct sentences to explain the meaning of the image and its significance from a mathematical perspective.
 * 7) * If the code you copied in step 1 used the  parameter to specify the image size, try removing that line to see whether the image looks acceptable at the default size.
 * 8) * Finally, note that we do not use the,   or   parameters of the Selected picture template. Also, please do not change the   or   lines.)
 * 9) Save the new subpage and check that it's being displayed correctly in the list below. (You may have to purge the cache to see the changes.)
 * 10) * If the default size is not acceptable (for example, if a raster image is being displayed larger than its actual size or if a GIF animation is showing up as a static image), the  parameter can be used to set the width (in pixels) of the image.
 * 11) Edit Portal:Mathematics and locate the template call that randomly chooses the pictures for display:
 * 12) Increase the number nn to reflect the new count of selected pictures, and save the page.
 * 13) And you're done.
 * 1) And you're done.

To find good images to add here, see any of the following image collections: You can also simply look through the images currently being displayed in our mathematics articles: Try to select new images from areas of mathematics that are not already represented in the list below.
 * Portal:Mathematics/Featured picture archive (there are still a few good images that haven't been ported from the old system)
 * WikiProject Mathematics
 * Featured pictures/Sciences/Mathematics
 * Featured pictures/Diagrams, drawings, and maps/Diagrams
 * Commons:Category:Featured diagrams
 * Commons:Category:Mathematics
 * WikiProject Mathematics/Recognized content
 * Featured articles (consider also other sections on related fields, like economics, engineering, physics, astronomy, etc.)
 * Good articles/Mathematics
 * Lists of mathematics topics
 * Category:Mathematics