\usepackage{tikz-cd}\begin{document}\begin{tikzcd} T \arrow[drr, bend left, "x"] \arrow[ddr, bend right, "y"] \arrow[dr, dotted, "{(x,y)}" description] & & \\ K & X \times_Z Y \arrow[r, "p"] \arrow[d, "q"] & X \arrow[d, "f"] \\ & Y \arrow[r, "g"] & Z\end{tikzcd}\quad \quad\begin{tikzcd}[row sep=2.5em]A' \arrow[rr,"f'"] \arrow[dr,swap,"a"] \arrow[dd,swap,"g'"] && B' \arrow[dd,swap,"h'" near start] \arrow[dr,"b"] \\& A \arrow[rr,crossing over,"f" near start] && B \arrow[dd,"h"] \\C' \arrow[rr,"k'" near end] \arrow[dr,swap,"c"] && D' \arrow[dr,swap,"d"] \\& C \arrow[rr,"k"] \arrow[uu,<-,crossing over,"g" near end]&& D\end{tikzcd}\end{document}
