Simplex fan
= Simplex fan
In dimension $d$, the fan whose rays are generated by $e_1,\ldots,e_d,-\sum_ie_i$ and whose cones are generated by proper subsets of those rays is complete. It is the fan of <projective space> $\mathbb P^d$.
= Simplex fan
In dimension $d$, the fan whose rays are generated by $e_1,\ldots,e_d,-\sum_ie_i$ and whose cones are generated by proper subsets of those rays is complete. It is the fan of <projective space> $\mathbb P^d$.