\xymatrix @R+.6pc @C+1.5pc { \def\adj{\ar@{}[rd]|<<<<<<<<<<{\rotatebox[origin=c]{-45}{$\dashv$}}} \C \adj \ar[r]^{F} \ar@{}[d]^(.15){}="c"^(.85){}="d" \ar@{^{(}->}_{\yoneda_{\C}}"c";"d" & \catD \ar@/^1pc/[dl]^-{ \Nerve{F}} \\ \Psh\C \ar@/^1pc/[ru]|-{\scriptscriptstyle \quad \Lan{\yoneda_{\C}}{F}}& }