2 papers
math.CO2026
Noncrossing Duality and the Geometry of Positive Tropical Linear Spaces
Nick Early, Thomas Lam
While the positive Grassmannian is deeply understood through the rich combinatorics of plabic graphs and positroid cells, its tropical counterpart, the positive tropical Grassmanni…
math.CO2026
Scaffolds for Higher Tropical Grassmannians: Foundations
Nick Early, Thomas Lam
Scaffolds are the one-dimensional skeleta of high-dimensional flag simplicial complexes of nonpositive curvature. They generalize the phylogenetic trees of Trop G(2,n) to arbitrary…