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math.CO2026
Decomposing Determinantal Varieties from Statistics via Matroid Theory
Per Alexandersson, Yulia Alexandr, Emiliano Liwski +2
We study determinantal varieties from conditional independence models with hidden variables, focusing on their irreducible decompositions, dimensions, degrees, and Gröbner bases. E…
math.CO2023
An exponential bound for simultaneous embeddings of planar graphs
Ritesh Goenka, Pardis Semnani, Chi Hoi Yip
We show that there are planar graphs on vertices which do not admit a simultaneous straight-line embedding on any -point set in the plane. In particula…