94.18.2.1

\begin{equation} \label{examples-stacks-equation-diagram-hilbert-d-stack} \vcenter { \xymatrix{ \mathcal{H}_ d(\mathcal{X}) \ar[rd] & \mathcal{H}_ d(\mathcal{X}/\mathcal{Y}) \ar[d] \ar[l] \ar[r] & \mathcal{Y} \\ & \mathcal{H}_ d } } \end{equation}

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