Supplementary Sage code that accompanies the paper:

The BCFW Amplituhedron Triangulation
Chaim Even-Zohar, Tsviqa Lakrec, and Ran J. Tessler.
Preprint available from: https://arxiv.org/abs/2112.02703

The code in "bcfw.sage" implements constructions that are used in the proof that the BCFW cells triangulate the amplituhedron. Namely, it demonstrates the algorithmic construction of a domino matrix given a chord diagram, and finding a separating functionary between the BCFW cells that correspond to two given chord diagrams. Sample outputs are provided for n=6, 7, 8, 9, and 10.

sage
> load("bcfw.sage")
> list_separators(7)