Image:Equivariant commutative diagram.png

	This Math image should be recreated using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is already available, please upload it. After uploading an SVG, replace this template with template {{Vector version available|new image name.svg}} in this image.
العربية | Български | Català | Česky | Dansk | Deutsch | English | Esperanto | Español | Français | 한국어 | Italiano | Magyar | Lietuvių | Nederlands | 日本語 | Polski | Português | Română | Русский | Suomi | Svenska | Türkçe | Українська | Tiếng Việt | मराठी | ‪中文(繁體)‬ | ‪中文(简体)‬ | +/-

A commutative diagram defining equivariance. David Benbennick made this image with the following LaTeX program:

%&latex
\documentclass{article}
 \usepackage[matrix,arrow,ps]{xy}
 \UsePSspecials{dvips}
 \pagestyle{empty}

\begin{document}
 \[
 \xymatrix{
 X \ar@{->}[rr]^{\displaystyle g\cdot} \ar@{->}[dd]_{\displaystyle f}
      && X \ar@{->}[dd]^{\displaystyle f}    \\ \\
 Y \ar@{->}[rr]_{\displaystyle g\cdot} && Y
 }
 \]
\end{document}

To make the image, save the above code as Equivariant_commutative_diagram.tex, then run the following commands:

tex Equivariant_commutative_diagram
dvips -mode ljfzzz -D 1200 Equivariant_commutative_diagram -o
convert -density 1200 Equivariant_commutative_diagram.ps Equivariant_commutative_diagram.pnm
pnmcrop Equivariant_commutative_diagram.pnm | pnmtopng > Equivariant_commutative_diagram.png.uncrush
pngcrush Equivariant_commutative_diagram.png.uncrush Equivariant_commutative_diagram.png

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. A copy of the license is included in the section entitled "GNU Free Documentation license". Aragonés | العربية | Asturianu | Български | বাংলা | ইমার ঠার/বিষ্ণুপ্রিয়া মণিপুরী | Brezhoneg | Bosanski | Català | Cebuano | Česky | Dansk | Deutsch | Ελληνικά | English | Esperanto | Español | Eesti | Euskara | فارسی | Suomi | Français | Gaeilge | Galego | עברית | Hrvatski | Magyar | Bahasa Indonesia | Ido | Íslenska | Italiano | 日本語 | ქართული | ភាសាខ្មែរ | 한국어 | Kurdî / كوردی | Latina | Lëtzebuergesch | Lietuvių | Bahasa Melayu | Nnapulitano | Nederlands | ‪Norsk (nynorsk)‬ | ‪Norsk (bokmål)‬ | Occitan | Polski | Português | Română | Русский | Slovenčina | Slovenščina | Shqip | Српски / Srpski | Svenska | తెలుగు | ไทย | Türkçe | Українська | اردو | Tiếng Việt | Volapük | Yorùbá | ‪中文(中国大陆)‬ | ‪中文(台灣)‬ | +/- This file is licensed under Creative Commons Attribution ShareAlike 2.0 License (cc-by-sa-2.0). In short: you are free to share and make derivative works of the file under the conditions that you appropriately attribute it, and that you distribute it under this or a similar cc-by-sa license. You may select the license of your choice.

• Equivariant