Motivated by the problem of bounding the number of rays of plane tropical curves we study the following question: Given $n\in\mathbb{ N}$ and a unimodular $2$-simplex $\Delta$ what is the maximal number of vertices a lattice polytope contained in $n\cdot \Delta$ can have? We determine this number for an infinite subset of $\mathbb{ N}$ by providing a family of vertex-maximal polytopes and give bounds for the other cases.
Categories: math.CO