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math-ph2021★ 4 cited
The Amplituhedron BCFW Triangulation
Chaim Even-Zohar, Tsviqa Lakrec, Ran J. Tessler
The amplituhedron Ank4 is a geometric object, introduced by Arkani-Hamed and Trnka (2013) in the study of scattering amplitudes in quantum field theories. They conjecture that Ank4…
math.CO2021
Garland's Technique for Posets and High Dimensional Grassmannian Expanders
Tali Kaufman, Ran J. Tessler
Local to global machinery plays an important role in the study of simplicial complexes, since the seminal work of Garland [G] to our days. In this work we develop a local to global…