The totally nonnegative Grassmannian is a ball

DOI10.1016/j.aim.2021.108123zbMath1482.05355OpenAlexW4205396504MaRDI QIDQ5918481

Pavel Galashin, Steven N. Karp, Thomas Lam

Publication date: 11 February 2022

Published in: Advances in Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1016/j.aim.2021.108123

zbMATH Keywords

Grassmanniantotal positivityunipotent group

Mathematics Subject Classification ID

Grassmannians, Schubert varieties, flag manifolds (14M15) Positive matrices and their generalizations; cones of matrices (15B48) Polytopes and polyhedra (52B99) Combinatorial aspects of simplicial complexes (05E45)

Related Items

Circular Planar Electrical Networks, Split Systems, and Phylogenetic Networks, Boundaries of the amplituhedron with \texttt{amplituhedronBoundaries}, Critical varieties in the Grassmannian, Gradient flows, adjoint orbits, and the topology of totally nonnegative flag varieties, Boundary measurement and sign variation in real projective space, The totally nonnegative Grassmannian is a ball

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