Generalized Permutahedra and Positive Flag Dressians.

Autor: Joswig, Michael, Loho, Georg, Luber, Dante, Olarte, Jorge Alberto
Předmět:
Zdroj: IMRN: International Mathematics Research Notices; Oct2023, Vol. 2023 Issue 19, p16748-16777, 30p
Abstrakt: We study valuated matroids, their tropical incidence relations, flag matroids, and total positivity. This leads to a characterization of permutahedral subdivisions , namely subdivisions of regular permutahedra into generalized permutahedra. Further, we get a characterization of those subdivisions arising from positive valuated flag matroids. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index