File:Empty set.svg
Size of this PNG preview of this SVG file: 400 × 400 pixels. Other resolutions: 240 × 240 pixels | 480 × 480 pixels | 768 × 768 pixels | 1,024 × 1,024 pixels | 2,048 × 2,048 pixels.
Original file (SVG file, nominally 400 × 400 pixels, file size: 391 bytes)
Summary
| Description | Symbol of empty set |
| Date | |
| Source | Own work |
| Author | Octahedron80 |
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 | 00:17, 12 February 2022 | | 400 × 400 (391 bytes) | 忍者猫 | Reduce file size |
| 09:04, 10 February 2008 |  | 400 × 400 (3 KB) | Octahedron80 | {{Information |Description=Symbol of empty set |Source=self-made |Date=February 10, 2008 |Author= Octahedron80 |Permission= |other_versions= }} |
File usage
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Global file usage
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- Usage on ca.wikipedia.org
- Usage on en.wikipedia.org
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- Usage on www.wikidata.org
