Tropical Regularity

Abstract

We introduce the notion of tropical regularity as a generalization of tropical smoothness and present a geometric classification conjecture for tropical regular cycles. Roughly, the conjecture predicts that every regular tuple either forms a regular fibration or descends via a lattice projection to one of finitely many minimal-model cycles. Our main results establish this conjecture in three fundamental cases:unmixed regular tuples $(T,\dots ,T,[F])$ with $L(T)=\{0\}$ and $[F]$ spanning its ambient space; regular tropicalizations of complete intersections with generic coefficients; and regular tropical $2$-cycles satisfying the Hodge index inequality and spanning their ambient space.