iThe source code of this SVG is valid.

lifting diagram created with LaTeX using the code

\usepackage{xypic}

\begin{equation} \xymatrix{ & Z \ar[d]^g \\ X \ar[r]^f \ar[ur]^h & Y } \end{equation}

(This is an SVG version which cleans up visual defects in the original PNG https://en.wikipedia.org/wiki/File:Lifting_diagram.png.)

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