30 citations · 169 across the 28 of their papers we have counts for
3 papers · 1 filter
Binary distributions of concentric rings
N. Wermuth G. M. Marchetti P. Zwiernik
We introduce families of jointly symmetric, binary distributions that are generated over directed star graphs whose nodes represent variables and whose edges indicate positive depe…
Tensors of Nonnegative Rank Two
Elizabeth S. Allman, John A. Rhodes, Bernd Sturmfels +1
A nonnegative tensor has nonnegative rank at most 2 if and only if it is supermodular and has flattening rank at most 2. We prove this result, then explore the semialgebraic geomet…
Secant cumulants and toric geometry
Mateusz Michalek, Luke Oeding, Piotr Zwiernik
We study the secant line variety of the Segre product of projective spaces using special cumulant coordinates adapted for secant varieties. We show that the secant variety is cover…