Brams, Steven J.; Kilgour, D. Marc; Klamler, Christian - In: Games 17 (2026) 1, pp. 1-10
We study conflicts between envy-based fairness and efficiency for allocating indivisible items under additive utilities. We formalize several small, transparent instances showing that standard envy-freeness (EF) or its relaxations EFX and EFX0-i.e., envy-freeness up to any item, where EFX...