Diagonally Embedded Sets of ${\mathrm{Trop}}^{+}G(2,n)$'s in $\mathrm{Trop}G(2,n)$: Is There a Critical Value of $n$?

Freddy Cachazo

The tropical Grassmannian $\mathrm{Trop}G(2,n)$ is known to be the moduli space of unrooted metric trees with $n$ leaves. A positive part can be defined for each of the $(n-1)!/2$…