User:Fropuff/Draft 4: Revision history

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9 November 2013

  • curprev 21:1221:12, 9 November 2013en>McZusatz 6,482 bytes +6,482 →‎Comma categories: <math>\begin{matrix} T(\alpha) & \xrightarrow{T(g)} & T(\alpha')\\ f \Bigg\downarrow & & \Bigg\downarrow f'\\ S(\beta) & \xrightarrow[S(h)]{} & S(\beta') \end{matrix}</math>