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Transferred from en.wikipedia to Commons by Maksim.

A commutative diagram illustrating the nine lemma. Copied from PlanetMath's article on the Nine Lemma, and therefore covered by the GFDL. The XY-Pic source code for the diagram can be downloaded from PlanetMath.

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

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• (del) (cur) 16:18, 4 February 2004 . . en:User:AxelBoldt AxelBoldt ( en:User_talk:AxelBoldt Talk) . . 288x290 (3204 bytes)