Transferred from en.wikipedia to Commons by Maksim.
The original description page was
here. All following user names refer to en.wikipedia.
Worldsheet diagram.
Source: I made it with ClarisDraw and PhotoShop.
The copyright to this image is retained by John Schmidt (JWSchmidt).
Permission is granted to copy, distribute and/or modify this image under the terms of the Wikipedia GFDL, as indicated in the fine print at the bottom of this page.
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已授权您依据自由软件基金会发行的无固定段落及封面封底文字(Invariant Sections, Front-Cover Texts, and Back-Cover Texts)的GNU自由文件许可协议1.2版或任意后续版本的条款,复制、传播和/或修改本文件。该协议的副本请见“GNU Free Documentation License”。http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue
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本许可协议标签作为GFDL许可协议更新的组成部分被添加至本文件。http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue
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If you do not want to use this image under the terms of the GFDL, you can alternatively use it under the terms of the cc-by-nc-sa license.
原始上传日志
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