91.6.0.2
$$\label{cotangent-equation-double-square} \vcenter { \xymatrix{ (\mathop{\mathit{Sh}}\nolimits (\mathcal{C}'), \underline{B}) \ar[d]_\pi & (\mathop{\mathit{Sh}}\nolimits (\mathcal{C}'), \underline{B'}) \ar[d]_\pi \ar[l]^ h & (\mathop{\mathit{Sh}}\nolimits (\mathcal{C}), \underline{B'}) \ar[d]_{\pi '} \ar[l]^ g \\ (\mathop{\mathit{Sh}}\nolimits (*), B) & (\mathop{\mathit{Sh}}\nolimits (*), B') \ar[l]_ f & (\mathop{\mathit{Sh}}\nolimits (*), B') \ar[l] } }$$

Comment #5112 by Mingchen on

g should be from Sh(C) to Sh(C')

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