Abstract. Fair division has long been an important problem in the economics literature. In this note, we consider the existence of proportionally fair allocations of indivisible goods, i.e., allocations of indivisible goods in which every agent gets at least her proportionally fair share according to her own utility function. We show that when utilities are additive and utilities for individual goods are drawn independently at random from a distribution, proportionally fair allocations exist with high probability if the number of goods is a multiple of the number of agents or if the number of goods grows asymptotically faster than the number of agents.
REF considered proportional allocations-allocations in which every agent receives at least 1/n of her value for the whole set of items-and showed that such allocations exist with high probability if m is a multiple of n or m = ω(n).
Asymptotic Existence of Proportionally Fair Allocations
Mathematical Social Sciences, 81:62-65 (2016)
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