George Kontogeorgiou

gkontogeorgiou [-at-] dim [-dot-] uchile [-dot-] cl

About me

I am a postdoctoral researcher at the CMM and the University of Chile, working with Maya Stein. Before, I did my PhD degree at the University of Warwick, where I was very fortunate to be advised by Agelos Georgakopoulos.

I am a graph theorist. I mostly work on structural and topological graph theory. Some of my favourite topics are Cayley graphs, embeddings of graphs and 2-complexes, and separating path systems. I am also interested in extremal and probabilistic combinatorics.

My research is supported by an ANID-Fondecyt postdoctoral grant.

Kenilworth, at the Castle

Groups & Graphs

Carmesin, J., Kontogeorgiou, G., Kurkofka, J. & Turner, W. (2024). Towards a Stallings-Type Theorem for Finite Groups, submitted (arxiv)
Kontogeorgiou, G. & Winter, M. (2025). Trees of Intermediate Uniform Growth, Random Struct. Algorithms. 67 (4). (extended abstract in EUROCOMB '23) (journal)
Georgakopoulos, A. & Kontogeorgiou, G. (2025). Discrete group actions on 3-manifolds and embeddable Cayley complexes, Canadian Journal of Mathematics. Published online 2025:1-26. (journal)

Graph Embeddings

Kontogeorgiou, G. (2023). A short proof of the existence of a minor-universal countable planar graph (arxiv)
Kontogeorgiou, G., Leivaditis, A., Psaromiligkos, K., Stamoulis, G. & Zoros. (2024). D. Branchwidth is (1-g)-self-dual, Discrete Appl. Math. 350, 1-9. (journal)

Separating Path Systems

Clifton, A., Kontogeorgiou, G., Taruni & Trujillo-Negrete, A. Rainbow separating path systems. Soon on arXiv.
Fernandes, G., Hoppen, C., Kontogeorgiou, G., Oliveira-Mota, G. & Peng, D. (2025). Separating path systems for cubic graphs and for complete bipartite graphs, submitted (arxiv)
Kontogeorgiou, G., Pavez-Signe, M., Stein, M., Taruni & Trujillo-Negrete, A. (2025). Separating edges by linearly many subdivisions, submitted (arxiv)
Kontogeorgiou, G. & Stein, M. (2024). Exact upper bounds for the minimum sizes of strong and weak separating path systems of cliques, submitted (arxiv)

Extremal & Probabilistic Combinatorics

Kontogeorgiou, G., Santos, G. & Stein, M. (2025). Antidirected trees in directed graphs, submitted (arxiv)
Czumaj, A., Kontogeorgiou, G. & Paterson, M. (2023). Haystack hunting hints and locker room communication, Random Struct. Algorithms. 62, 832-856. (abridged version in ICALP '21) (journal)
Kirousis, L. & Kontogeorgiou, G. (2018).102.18 The probleme des menages revisited. The Mathematical Gazette, 102 (553), 147-149. (journal)

Co-authors: Maya Stein, Matías Pavez-Signé, Ana Trujillo-Negrete, Giovanne Santos, Johannes Carmesin, Jan Kurkofka, Will Turner, Giannos Stamoulis, Martin Winter, Agelos Georgakopoulos, Artur Czumaj, Mike Paterson, Lefteris Kirousis

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