Bordifications of the moduli spaces of tropical curves and abelian varieties, and unstable cohomology of ${\mathrm{GL}}_g(\mathbb{Z})$ and ${\mathrm{SL}}_g(\mathbb{Z})$

Francis Brown

We construct bordifications of the moduli spaces of tropical curves and of tropical abelian varieties, and show that the tropical Torelli map extends to their bordifications. We pr…