This file is from a shared repository and may be used by other projects.
The description on its file description page there is shown below.
Summary
This image was uploaded in a non-image format. The information it contains could be stored more efficiently in the PNG format, the SVG format, as plain text in an article, or (rarely) in JPEG format.
If the information is encyclopedic, please integrate its text and information into an article, or consider copying its contents to Wikisource if it is freely licensed. If the contents are unencyclopedic or a copyright violation, please consider proposing it for deletion using {{subst:Proposed deletion|concern=reason for proposed deletion}}. For more information, see Wikipedia:Preparing images for upload.
File information
Description
Peripheral subgroup The tubular neighborhood of a knot, with a meridian and a longitude, a basis for R^3, and a path from the basepoint.
I, the copyright holder of this work, hereby publish it under the following licenses:
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.
This work is licensed under the Creative CommonsAttribution-ShareAlike 3.0 License. https://creativecommons.org/licenses/by-sa/3.0/CC-BY-SA-3.0Creative Commons Attribution-ShareAlike 3.0truetrue
If this file has problems with attribution, copyright, or is otherwise ineligible for Commons, then remove this tag and DO NOT transfer it; repeat violators may be blocked from editing.
Other Instructions
Endorse this file for transfer by adding |human=<your username> to this Template.
If this file is freely licensed, but otherwise unsuitable for Commons (e.g. out of Commons' scope, still copyrighted in the US), then replace this Template with {{Do not move to Commons|reason=<Why it can't be moved>}}
If you think that a local copy of this file should be retained, then replace this Template with {{Keep local|reason=<Why a local copy is needed>}}