File:Salem-Spencer-8-14.svg
Size of this PNG preview of this SVG file: 540 × 414 pixels. Other resolutions: 313 × 240 pixels | 626 × 480 pixels | 1,002 × 768 pixels | 1,280 × 981 pixels | 2,560 × 1,963 pixels.
Original file (SVG file, nominally 540 × 414 pixels, file size: 3 KB)
 | 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. |
Summary
| Description |
English: The 8-element set {1, 2, 4, 5, 10, 11, 13, 14} is a Salem–Spencer set, meaning that it has no three elements forming an arithmetic progression. For each pair of two numbers from the set, their midpoint (one of the 28 yellow points) is outside the set, preventing those two numbers from being the first and last element of an arithmetic progression. |
| Date | |
| Source | Own work |
| Author | David Eppstein |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
 
|
This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
| The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
|
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:31, 4 February 2019 | | 540 × 414 (3 KB) | David Eppstein | User created page with UploadWizard |
File usage
The following 2 pages use this file:
Global file usage
The following other wikis use this file:
- Usage on es.wikipedia.org
- Usage on lv.wikipedia.org
