Transferred from en.wikipedia to Commons by Maksim.

A side view of a Boy's surface which shows a cave entrance on the right, under the arch produced by the central passageway, feeding the passageway on the left, which in turn arches over another cave entrance.

This image was made by AugPi using Mathematica.

 

This diagram was created with Mathematica by n.

(c) AugPi, 2004. Licensed to Wikimedia.

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.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue

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	This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue

Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version.

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• (del) (cur) 02:32, 5 May 2004 . . en:User:Wapcaplet Wapcaplet ( en:User_talk:Wapcaplet Talk) . . 341x347 (24055 bytes) (Lossless file size reduction)
• (del) (rev) 02:49, 29 April 2004 . . en:User:AugPi AugPi ( en:User_talk:AugPi Talk) . . 341x347 (32786 bytes) (A side view of a Boy's surface which shows a cave entrance on the right, under the arch produced by the central passageway, feeding the passageway on the left, which in turn arches over another cave entrance.)