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Summary
This image shows some kind of formula that could be converted to
TeX . Storing formulas as images makes it harder to change them. TeX also helps making sure that they all use the same font and size.
A replacement has been proposed. In your article, replace the image with this code.
E
1
→
f
E
2
π
1
↓
↓
π
2
X
1
→
g
X
2
{\displaystyle {\begin{matrix}\quad E_{1}&{\xrightarrow {\quad f\quad }}&E_{2}\quad \\\pi _{1}{\Big \downarrow }&&{\Big \downarrow }\pi _{2}\\\quad X_{1}&{\xrightarrow[{\quad g\quad }]{}}&X_{2}\quad \end{matrix}}}
<math>\begin{matrix}
\quad E_1 & \xrightarrow{\quad f \quad} & E_2 \quad\\
\pi_1 \Big\downarrow & & \Big\downarrow \pi_2\\
\quad X_1 & \xrightarrow[\quad g \quad]{} & X_2 \quad
\end{matrix}</math>
Keep : Can currently not been reproduced nicely български ∙ Deutsch ∙ Ελληνικά ∙ English ∙ فارسی ∙ magyar ∙ italiano ∙ 日本語 ∙ македонски ∙ Nederlands ∙ polski ∙ русский ∙ sicilianu ∙ svenska ∙ +/−
possible LaTeX source code
\usepackage [all] { xy}
\xymatrix {
E_ 1 \ar [d] _{ \pi_ 1} \ar [r] ^ f & E_ 2 \ar [d] ^{ \pi_ 2} \\
X_ 1 \ar [r] _ g & X_ 2
}
</source>
or
<source lang="latex">
\usepackage { amscd}
\begin { CD}
E_ 1 @>{ f} >> E_ 2 \\
@V{ \pi_ 1} VV @VV{ \pi_ 2} V \\
X_ 1 @>>{ g} > X_ 2
\end { CD}
Licensing
Public domain Public domain false false
English Add a one-line explanation of what this file represents
File history
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Date/Time Thumbnail Dimensions User Comment
current 17:39, 13 January 2012 83 × 70 (17 KB) wikimediacommons>Jiriskala
File usage
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