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Ackermann.png (512 × 75 pixels, file size: 6 KB, MIME type: image/png)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
 | This PNG image was uploaded in a graphics format such as GIF, PNG, JPEG, or SVG. However, it consists purely or largely of information which is better suited to representation in wikitext (possibly using MediaWiki's special syntax for tables, math, or music). This will make the information easier to edit, as well as make it accessible to users of screen readers and text-based browsers. The additional reason provided is: It consists only of mathematical notation. If possible, please replace any inclusions of this image in articles (noted under the "File links" header) with properly formatted wikitext. After doing so, please consider nominating this image for deletion. |
Summary
| Description |
English: Image for main page with Ackermann function. |
| Date | 16 July 2004 (original upload date) |
| Source |
Rendering of relevant math notation. Rendered obsolete by the following math code: <math> A(m, n) = \begin{cases} n+1 & \mbox{if } m = 0 \\ A(m-1, 1) & \mbox{if } m > 0 \mbox{ and } n = 0 \\ A(m-1, A(m, n-1)) & \mbox{if } m > 0 \mbox{ and } n > 0. \end{cases} </math> |
| Author | The original uploader was Lupin at Wikipedia. |
Licensing
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The depicted text is ineligible for copyright and therefore in the public domain because it is not a “literary work” or other protected type in sense of the local copyright law. Facts, data, and unoriginal information which is common property without sufficiently creative authorship in a general typeface or basic handwriting, and simple geometric shapes are not protected by copyright.
This tag does not generally apply to all images of texts. Particular countries can have different legal definition of the “literary work” as the subject of copyright and different courts' interpretation practices. Some countries protect almost every written work, while other countries protect distinctively artistic or scientific texts and databases only. Extent of creativeness, function and length of the text can be relevant. The copyright protection can be limited to the literary form – the included information itself can be excluded from protection.
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File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:46, 24 September 2004 | | 512 × 75 (6 KB) | Sverdrup | Fix omission |
| 10:03, 16 July 2004 |  | 354 × 60 (4 KB) | Lupin | image for main page with Ackermann function <br>{{PD}} |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
