The research of SA has been partially supported by GNFM-INDAM
and RFO University of Bologna. The work of PGG was partially supported by the Russian Foundation
of Basic Research grant No 20-01-00157. We acknowledge the financial support of the project MMNLP
(Mathematical Methods in Non Linear Physics) of the INFN.
This publication is cited in the following 2 articles:
D. A. Golicin, A. A. Kutuzova, D. V. Talalaev, “Hyperbolic stable polynomials and total positivity”, Math. Notes, 116:3 (2024), 561–565
Simonetta Abenda, Petr G. Grinevich, “Geometric nature of relations on plabic graphs and totally non-negative Grassmannians”, Int. Math. Res. Not. IMRN, 2023:14 (2023), 11986–12051