# PhD Positions

Several PhD positions in theoretical computer science and discrete mathematics are available at the School of Computer Science of Faculty of Mathematics and Physics at Charles University, Prague. The positions are in algorithms, algorithmic game theory, cryptography, computational complexity, combinatorics, graph theory, optimization, and networks. They are hosted at the Computer Science Institute of Charles University, Department of Applied Mathematics, and Department of Theoretical Computer Science and Mathematical Logic. Applicable advisors are:

- Martin Balko (combinatorics and discrete geometry)
- Roman Bartak (multi-agent path finding)
- Ondřej Čepek (knowledge representation languages, knowledge compilation, Boolean functions)
- Zdeněk Dvořák (graph theory and algorithms)
- Andreas Feldmann (algorithms and parameterized complexity)
- Jirka Fink (combinatorial optimization and artificial intelligence)
- Petr Gregor (algorithms and combinatorics)
- Milan Hladík (optimization and linear algebra)
- Pavel Hubáček (cryptography and computational complexity)
- Jan Hubička (combinatorics and graph theory)
- Vít Jelínek (combinatorics and graph theory)
- Martin Klazar (enumerative combinatorics, number theory)
- Petr Kolman (approximation algorithms)
- Michal Koucký (algorithms and computational complexity)
- Martin Koutecký (algorithms and computational social choice)
- Jan Kratochvíl (graph theory and computational complexity)
- Jan Kynčl (discrete geometry and combinatorics)
- Martin Loebl (combinatorics, optimization, and algorithmic game theory)
- Torsten Mütze (combinatorics and algorithms)
- Jaroslav Nešetřil (combinatorics and network science)
- Irena Penev (combinatorics and graph theory)
- Jiří Sgall (algorithms and computational complexity)
- Robert Šámal (combinatorics and graph theory)
- Martin Tancer (combinatorial and computational topology and geometry)
- Hans Raj Tiwary (polyhedral combinatorics and extension complexity)
- Mykhaylo Tyomkyn (combinatorics and graph theory)
- Pavel Valtr (combinatorics and computational geometry)
- Pavel Veselý (algorithms and data structures)

Some of the current research projects that students can participate in:

- Algorithmic, structural and complexity aspects of geometric configurations (Czech Science Foundation, 2021-2023), advisors: Valtr, Balko, Kynčl
- H2020-MSCA-RISE CoSP: Combinatorial Structures and Processes (EU Horizon 2020), advisors: Loebl
- DYNASNET: Dynamics and Structure of Networks (European Research Council), advisors: Dvořák, Hubička, Nešetřil, Šámal
- EPAC: Efficient approximation algorithms and circuit complexity (Czech Science Foundation), advisors: Feldmann, Hubáček, Koucký, Koutecký, Sgall, Veselý
- Flows and cycles in graphs on surfaces (Czech Science Foundation), advisors: Dvořák, Šámal
- Efficient and Realistic Models for Computational Social Choice (Czech Science Foundation), advisors: Koutecký, Veselý
- Principles of combinatorial generation (Czech Science Foundation), advisors: Gregor, Mütze
- Global sensitivity analysis and stability in optimization problem (Czech Science Foundation), advisors: Hladík
- Ramsey theory in the context of group theory, model theory and topological dynamics (Czech Science Foundation), advisors: Hubička
*CrisDis: Critical Distribution System (Czech Ministry of Interior; Pandemics Call), advisors: Loebl, Fink (finished)**Graphs and their algebraic properties (Czech Science Foundation), advisors: Goodall, Jelínek, Šámal (finished)**Graph Covers: Symmetries and Computational Complexity (Czech Science Foundation), advisors: Fiala, Kratochvíl, Nedela (ZCU Plzen) (finished)**Boolean Representation Languages Complete for Unit Propagation (Czech Science Foundation), advisors: Čepek (finished)*

Applications are invited from candidates who have a strong background in computer science and/or mathematics and complete their MSc. degree by summer 2023.

**Starting date:** Fall 2023.

### Funding:

For the study's usual duration, the School guarantees a total net income of at least 25,000 CZK/month to doctoral students. Funding from the second year on is conditioned on the PhD candidate's good progress towards his/her degree based on a yearly evaluation of doctoral students. The income consists of:

**Base scholarship**: All PhD students will receive for the 4-year duration of their studies a state-guaranteed stipend of net 11,000 CZK/month, which increases to net 12,500 CZK/month in the second year and finally to net 14,500 CZK/month after passing the state doctoral exam (commonly during the second year of the studies).**School and grant supplements**: Additionally to the base scholarship, the School of Computer Science guarantees to the students net 15,000 CZK/month during the first year and net 12,000 CZK/month during the second, third, and fourth years based on employment as a teaching and research assistant. The supplement from the School can be further increased by funding from a research project of the student's advisor.

Students have the possibility to apply for additional funds for salary and travel at the Grant Agency of Charles University.

PhD students can take advantage of subsidized meals, discounted public transport, the possibility of staying in student dormitories, and free "Czech as foreign language" classes. The national health insurance scheme covers our doctoral students. There are no tuition or fees for PhD students. The price level in Prague can be estimated at Numbeo.

### Application:

The application should indicate the area of interest and possible advisors and contain:

- a short letter of motivation (research statement),
- a professional CV,
- a letter of recommendation,
- transcripts of all courses and grades,
- copies of academic certificates (Bc and MSc, if available),
- other optional materials, e.g., copies of English language certificates if available, published papers, etc.

**Application deadline:** February 16th, 2023.

The application and a letter of recommendation should be sent electronically to `positions@iuuk.mff.cuni.cz`. The referees can send their letters directly to the indicated email. In both cases, make sure that the name of the applicant is contained in the subject. Inquiries about the positions can be directed to `koucky@iuuk.mff.cuni.cz` or the appropriate advisors.