The Graph Theory Department was established in 2021 by dividing the long-standing Discrete Mathematics Department into three parts. We continue to jointly organize the institute's combinatorial seminars: the combinatorics seminar, the extremal set theory seminar, and the combinatorial search seminar.
The members of the department study various properties of graphs. On the one hand, they study fundamental properties, such as colorings, extremal questions, and Ramsey problems. On the other hand, they study topological questions, such as planarity and embeddability into other surfaces. Furthermore, they study graph-like structures, e.g., directed graphs, hypergraphs, ordered graphs, random graphs, and geometrically defined graphs.
Our staff consists of senior and young researchers investigating these questions.
Head of Department:
Employees:

Bärnkopf Pál
assistant research fellow
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Research group:ERMiD
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Research department:Graph theory
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Room:II.1.
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Phone:+36 1 483 8329
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Email:barnkopf.pal (at) renyi.hu

Csikvári Péter
senior research fellow
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Research group:Enumeration in sparse graphs
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Research department:Graph theory
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Room:II/6.
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Phone:1/4838354
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Email:csikvari.peter (at) renyi.hu

Csirmaz László
senior research fellow
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Research group:ERMiD
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Research department:Graph theory
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Room:-
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Phone:-
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Email:csirmaz.laszlo (at) renyi.hu

Gujgiczer Anna
assistant research fellow
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Research group:-
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Research department:Graph theory
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Room:Reál 11.
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Phone:+36 1 483 8397
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Email:gujgiczer.anna (at) renyi.hu

Gyárfás András
research professor emeritus
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Research group:-
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Research department:Graph theory
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Room:I. 9.
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Phone:06 1 483-8359
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Email:gyarfas.andras (at) renyi.hu

Győri Ervin
research professor
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Research group:-
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Research department:Graph theory
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Room:I/ 3.
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Phone:06 1 483-8319
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Email:gyori.ervin (at) renyi.hu

Viktor Harangi
senior research fellow
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Research group:Enumeration in sparse graphs
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Research department:Graph theory
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Room:II/6.
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Phone:1/4838354
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Email:harangi.viktor (at) renyi.hu

Joanna Jasinska
assistant research fellow
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Research group:-
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Research department:Graph theory
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Room:II.5.
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Phone:+36 1 483 8326
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Email:jasinska.joanna (at) renyi.hu

Jung Attila
assistant research fellow
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Research group:ERMiD
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Research department:Graph theory
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Room:III.18.
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Phone:+3614838353
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Email:jung.attila (at) renyi.hu

Keszegh Balázs
senior research fellow
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Research group:-
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Research department:Graph theory
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Room:III/18.
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Phone:1/4838353
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Email:keszegh (at) renyi.hu

Lehel Jenő
senior research fellow
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Research group:-
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Research department:Graph theory
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Room:-
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Phone:-
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Email:lehel.jeno (at) renyi.hu

Ligeti Péter
senior research fellow
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Research group:ERMiD
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Research department:Graph theory
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Room:-
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Phone:-
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Email:ligeti.peter (at) renyi.hu

Pálvölgyi Dömötör
research professor
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Research group:ERMiD
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Research department:Graph theory
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Room:III.10.
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Phone:+3614838306
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Email:palvolgyi.domotor (at) renyi.hu

Ruszinkó Miklós
research professor
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Research group:-
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Research department:Graph theory
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Room:III.15.
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Phone:+3614838333
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Email:ruszinko.miklos (at) renyi.hu

Sárközy Gábor
research professor
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Research group:-
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Research department:Graph theory
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Room:III.11.
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Phone:+3614838357
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Email:sarkozy.gabor (at) renyi.hu

Simonovits Miklós
research professor emeritus
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Research group:-
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Research department:Graph theory
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Room:I.9.
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Phone:06 1 483-8359
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Email:simonovits.miklos (at) renyi.hu

Tardos Gábor
research professor
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Research group:GeoScapeERMiD
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Research department:Graph theory
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Room:III/6
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Phone:06 1 483-8348
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Email:tardos.gabor (at) renyi.hu

Casey Tompkins
research fellow
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Research group:-
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Research department:Graph theory
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Room:II.10.
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Phone:+3614838356
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Email:tompkins.casey (at) renyi.mta.hu

Tóthmérész Lilla
research fellow
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Research group:Enumeration in sparse graphs
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Research department:Graph theory
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Room:-
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Phone:-
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Email:tothmereszlilla (at) gmail.com

Tuza Zsolt
research professor emeritus
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Research group:-
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Research department:Graph theory
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Room:III.17.
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Phone:+3614838349
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Email:tuza.zsolt (at) renyi.hu