Grzegorz Ryn

PhD Student - Computer Science

I am a PhD student at Theoretical Computer Science, Jagiellonian University, working under supervision of prof. Jakub Kozik.

My research focuses on Random Constraint Satisfaction Problems. Particularly on probabilistic algorithms and the gap between algorithmic and existential results.

Education

Years	Degree	Institution
2025/26 – present	PhD, Computer Science (direct entry after BSc)	Jagiellonian University
2022/23 – 2024/25	BSc, Theoretical Computer Science	Jagiellonian University

Experience

Period	Role	Company
Summer 2024	Software Engineering Intern	Splunk
Summer 2023	Research Assistant	Huawei

Works

Technical note on Friedgut’s sharp threshold theorems for non-uniform hypergraphs

Grzegorz Ryn

PDF

Conferences & Workshops

Upcoming events

Polish Combinatorial COnference 2026

20-26 September 2026 - Będlewo, Poland

Past events

Algomanet 2026

July 2026 - Leipzig, Germany
Research visit

July 2026 - Oxford, England
IGAFIT Highlights of Algorithms 2026

Poster: Hypergraph 2-coloring and sharp thresholds for non-uniform structures

June 2026 - Stockholm, Sweden

Poster Slides
Sofsem 2026

February 2026 - Kraków, Poland
Eurocomb'25

Talk: Two-colorability of random non-uniform hypergraphs

August 2025 - Budapest, Hungary

Slides Extended abstract
Random Structures & Algorithms 2025

Talk: Two-colorability of random non-uniform hypergraphs

August 2025 - Vienna, Austria

Slides
Polish Combinatorial Conference 2024

September 2024 - Będlewo, Poland

Student conferences

Oblicze 2025

Talk: Nonrepetitive sequences

May 2025 - Poznań, Poland

Slides
OSSM 2025

Talk: Two-colorability of random hypergraphs

April 2025 - Kraków, Poland

Slides
Wrocławskie Spotkania Szkockie 2025

Talk: Thresholds in random graphs

March 2025 - Wrocław, Poland

Slides

Activities

Co-organizer — Sofsem 2026 2026
Local committee member.
Treasurer — Student Mathematical Society, Jagiellonian University 2024 – 2025
Co-organization of numerous events including conference, workshops, winter/summer schools and trips to conferences.

Managed the annual budget of ~80k PLN.
Co-organizer — XXVI International Workshop for Young Mathematicians "Combinatorics" 2025
Co-organized the largest mathematics workshops for students in Poland, with over 60 participants and 10 invited speakers.
Co-organizer — OSSM 2025 2025
Co-organized one of the largest mathematics student conferences in Poland, with over 100 participants.

Teaching

Office hours Thursdays 16:00 - 17:30, room 3152

Object Oriented Programming — Laboratory Summer 2025/26
Algorithms and Data Structures 1 — Laboratory Winter 2025/26

Competitive programming

Since 2022 I have given lectures and workshops in algorithmics and programming at the Jagiellonian Olympic Workshops (JWO), worked as an instructor in the nationwide Championships in Algorithmics and Programming (MAP), and prepared problem sets for training camps ahead of the Polish Olympiad in Informatics.

Contact

Email (first name).(last name)@doctoral.uj.edu.pl

Office Room 3152, Faculty of Mathematics and Computer Science

GitHub @Samboor LinkedIn profile