<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\xymatrix{
	\del\Delta[n] \ar[r] \ar[d] \xypo &amp; X \ar[d] \\
	\Delta[n] \ar[r]                  &amp; X'
}
</pre></body></html>