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conference paper

Hardness Results for Consensus-Halving

Filos-Ratsikas, Aris
•
Frederiksen, Soren Kristoffer Stiil
•
Goldberg, Paul. W
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Potapov, Igor
•
Spirakis, Paul
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2018
43rd International Symposium on Mathematical Foundations of Computer Science (MFCS 2018)

The Consensus-halving problem is the problem of dividing an object into two portions, such that each of n agents has equal valuation for the two portions. We study the epsilon-approximate version, which allows each agent to have an epsilon discrepancy on the values of the portions. It was recently proven in that the problem of computing an epsilon-approximate consensus-halving solution (for n agents and n cuts) is PPA-complete when epsilon is inverse-exponential. In this paper, we prove that when epsilon is constant, the problem is PPAD-hard and the problem remains PPAD-hard when we allow a constant number of additional cuts. Additionally, we prove that deciding whether a solution with n − 1 cuts exists for the problem is NP-hard.

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Type
conference paper
DOI
10.4230/LIPIcs.MFCS.2018.24
ArXiv ID

1609.05136

Author(s)
Filos-Ratsikas, Aris
Frederiksen, Soren Kristoffer Stiil
Goldberg, Paul. W
Zhang, Jie
Editors
Potapov, Igor
•
Spirakis, Paul
•
Worrell, James
Date Issued

2018

Publisher

Schloss Dagstuhl-Leibniz-Zentrum fuer Informatik

Publisher place

Dagstuhl, Germany

Published in
43rd International Symposium on Mathematical Foundations of Computer Science (MFCS 2018)
Start page

24:1

End page

24:16

Written at

EPFL

EPFL units
LIA  
Available on Infoscience
August 14, 2019
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/159832
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