Fairly Dividing a Cake after Some Parts Were Burnt in the Oven
arXiv:1704.00726
Abstract
There is a heterogeneous resource that contains both good parts and bad parts, for example, a cake with some parts burnt, a land-estate with some parts heavily taxed, or a chore with some parts fun to do. The resource has to be divided fairly among agents with different preferences, each of whom has a personal value-density function on the resource. The value-density functions can accept any real value --- positive, negative or zero. Each agent should receive a connected piece and no agent should envy another agent. We prove that such a division exists for 3 agents and present preliminary positive results for larger numbers of agents.
Extended version of AAMAS-18 paper. Contains preliminary results indicating that the conjecture is true in two special cases (Section 6)