Members of the project

1. Alkmini Sgouritsa (Principal Investigator), Assistant Professor at the Athens University of Economics and Business, Greece.
2. Giorgos Christodoulou, Associate Professor in the School of Informatics at the Aristotle University of Thessaloniki, Greece
3. Aris Filos Ratsikas, Lecturer (Assistant Professor) at the University of Edinburgh, UK.
4. Thanasis Lianeas, Post-doctoral researcher at the Athens University of Economics and Business, Greece.
5. Michalis Samaris, Post-doctoral researcher at the Athens University of Economics and Business, Greece.
6. Minas Marios Sotiriou, PhD candidate at the Athens University of Economics and Business, Greece.
7. Ioannis Kakatelis, PhD candidate at the Czech Technical University, Czech republic.

Invitation to Open Day (28/11/2025)

We invite you to an Open Day on Fair Division. It will be help on Friday (28/11/2025) at the Lecture Theatre of Troias building, Athens University of Economics and Business.
The Program can be found here, and the abstracts of the talks here.

Publications

Journal papers

• EFX Allocations on Graphs
  Giorgos Christodoulou, Amos Fiat, Elias Koutsoupias, Alkmini Sgouritsa
  Mathematics of Operations Research (MOR) journal (to appear).

Conference papers

• Pushing the Frontier on Approximate EFX Allocations
  Georgios Amanatidis, Aris Filos-Ratsikas, Alkmini Sgouritsa
  25th ACM Conference on Economics and Computations (EC) 2024.
• EF2X Exists For Four Agents
  Arash Ashuri, Vasilis Gkatzelis, Alkmini Sgouritsa
  39th AAAI Conference on Artificial Intelligence 2025.
• On the existence of EFX allocations on multigraphs
  Alkmini Sgouritsa, Minas Marios Sotiriou
  24th International Conference on Autonomous Agents and Multiagent Systems (AAMAS) 2025.
• EFX Allocation in (Multi)Hypergraphs
  Thanasis Lianeas, Alkmini Sgouritsa, Minas Marios Sotiriou
  40th AAAI Conference on Artificial Intelligence 2026 (to appear).

ArXiv

• Pushing the Frontier on Approximate EFX Allocations
  Georgios Amanatidis, Aris Filos-Ratsikas, Alkmini Sgouritsa, 2024.
• EF2X Exists For Four Agents
  Arash Ashuri, Vasilis Gkatzelis, Alkmini Sgouritsa, 2024.
• On the existence of EFX allocations on multigraphs
  Alkmini Sgouritsa, Minas Marios Sotiriou, 2025.

Ongoing work

• Relaxations of EFX in Multigraphs
  Ioannis Kakatelis, Thanasis Lianeas, Alkmini Sgouritsa, Minas Marios Sotiriou
• Efficient EFX Allocations
  Giorgos Christodoulou, Alkmini Sgouritsa
• Envy-cycle Elimination with Strategic Agents
  Evangelos Markakis, Michalis Samaris, Alkmini Sgouritsa