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math.ST2026
Dense alternating sign matrices and imprecise copulas
Tomaž Košir, Elisa Perrone, Nik Stopar
In this paper, we study discrete quasi-copulas and discrete imprecise copulas of minimal range, which naturally correspond to alternating sign matrices. We identify dense alternati…
math.ST2025
Zero patterns in multi-way binary contingency tables with uniform margins
Roberto Fontana, Elisa Perrone, Fabio Rapallo
We study the problem of transforming a multi-way contingency table into an equivalent table with uniform margins and same dependence structure. This is an old question which relate…