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math.CO2026
The neighbourhood convexity
Daniela Bubboloni, José Cáceres
In this paper, we investigate the neighbourhood convexity (-convexity) on graphs, a new finite convexity space grounded in the common closed neighbourhood closure operator. Unli…
econ.TH2026
Comparison games and ranking of players
Daniela Bubboloni, Stefano Moretti
This work addresses the problem of assessing player importance in coalitional settings where the available information concerns the relative strength between pairs of coalitions, r…