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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.
<math>\begin{array}{c}
A \otimes (B \otimes C) \xrightarrow{\quad \gamma \quad} (B \otimes C) \otimes A\\
{}^\alpha\nearrow \quad \quad \quad \quad \quad \quad \quad \searrow^\alpha \\
(A \otimes B) \otimes C \quad \quad \quad \quad \quad \quad \quad B \otimes (C \otimes A) \\
{}_{\gamma \otimes 1}\searrow \quad \quad \quad \quad \quad \quad \quad \nearrow_{1 \otimes \gamma} \\
(B \otimes A) \otimes C \xrightarrow[\quad \alpha \quad]{} B \otimes (A \otimes C)
This work has been released into the public domain by its author, Fropuff~commonswiki. This applies worldwide. In some countries this may not be legally possible; if so: Fropuff~commonswiki grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
TeX source
\begin{diagram}[vtrianglewidth=2.1em,tight]
&& A\otimes (B\otimes C) &&\rTo^{\scriptstyle\gamma}&& (B\otimes C)\otimes A \\&\ruTo^{\scriptstyle\alpha}&&&&&&\rdTo>{\scriptstyle\alpha}\\
(A\otimes B)\otimes C &&&&&&&& B\otimes (C\otimes A) \\&\rdTo<{\scriptstyle\gamma\otimes 1}&&&&&&\ruTo>{\scriptstyle 1\otimes\gamma}\\&& (B\otimes A)\otimes C &&\rTo_{\scriptstyle\alpha}&& B\otimes (A\otimes C) \\\end{diagram}
Captions
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