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math.CO2025
Extending Thomassen's conjecture to directed graphs
Micha Christoph, Barnabás Janzer, Kalina Petrova +1
A famous conjecture by Thomassen from 1983 asserts that for any given there exists some such that every graph of minimum degree at leas…
math.CO2025
Sunflowers and Ramsey problems for restricted intersections
Barnabás Janzer, Zhihan Jin, Benny Sudakov +1
Extremal problems on set systems with restricted intersections have been an important part of combinatorics in the last 70 years. In this paper, we study the following Ramsey versi…