%0 Journal Article %A Karp, Steven N. %T Defining amplituhedra and Grassmann polytopes %J Discrete mathematics & theoretical computer science %D 2020 %V DMTCS Proceedings, 28th International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2016) %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.46298/dmtcs.6356/ %R 10.46298/dmtcs.6356 %G en %F DMTCS_2020_special_379_a38