Asymptotic Behavior of Tropical Rank Functions

Abstract

We show that the asymptotic behavior of the two main competing notions of rank of a linear series on a tropical curve is governed by asymptotic invariants, closely paralleling the theory of volumes in algebraic geometry. We introduce and study tropical notions of volume associated to both divisors and tropical modules. We prove optimal asymptotic results for each case. In addition, we show that the tropical volume is compatible with the tropicalization of curves.

Comments are welcome. 14 figures, 23 pages. In v2, an emphasis on the difference between volume of divisors and tropical modules has been added