For any additive disutility chore division instance, a 2-EFX allocation always exists, improving the prior best-known 4-EFX guarantee.
EFX: A simpler approach and an (almost) optimal guarantee via rainbow cycle number
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Existence of 2-EFX Allocations of Chores
For any additive disutility chore division instance, a 2-EFX allocation always exists, improving the prior best-known 4-EFX guarantee.