File:Tietze genus 2 colouring.svg
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Original file (SVG file, nominally 512 × 512 pixels, file size: 5 KB)
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Summary
| Description | A redrawing of Hermann Tietze's drawing of a complete map of 8 regions on a double torus (genus-two surface) with each region touching every other by CMG Lee. Regions of the same colour wrap around along the dotted lines. Each bubble denotes a unique combination of two regions. |
| Source | Own work |
| Author | Cmglee |
Licensing
I, the copyright holder of this work, hereby publish it under the following licenses:
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- to share – to copy, distribute and transmit the work
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- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. |
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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 | 19:37, 4 November 2021 | | 512 × 512 (5 KB) | Cmglee | Curve red-green boundary and make yellow region more symmetrical // Editing SVG source code using c:User:Rillke/SVGedit.js |
| 19:31, 4 November 2021 |  | 512 × 512 (5 KB) | Cmglee | Smooth transition // Editing SVG source code using c:User:Rillke/SVGedit.js | |
| 01:30, 3 November 2021 |  | 512 × 512 (5 KB) | Cmglee | Hide white gaps // Editing SVG source code using c:User:Rillke/SVGedit.js | |
| 17:30, 23 October 2021 |  | 512 × 512 (5 KB) | Cmglee | Add shading | |
| 01:15, 16 October 2021 |  | 512 × 512 (5 KB) | Cmglee | Avoid overlap and improve colours // Editing SVG source code using c:User:Rillke/SVGedit.js | |
| 00:12, 16 October 2021 |  | 512 × 512 (5 KB) | Cmglee | {{Information |Description=A redrawing of Hermann Tietze's drawing of a complete map of 8 regions on a double torus (genus-two surface) with each region touching every other by CMG Lee. Regions of the same colour wrap around along the dotted lines. Each bubble denotes a unique combination of two regions. |Source={{own}} |Date= |Author= Cmglee |Permission= |other_versions= }} Category:SVG orb Category:Torus Category:Heawood graph Category:Four-color theorem |
File usage
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Global file usage
The following other wikis use this file:
- Usage on sq.wikipedia.org
