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Discrete Math

Micha Christoph - Resolution of the Kohayakawa--Kreuter conjecture

Location:  Hill 705
Date & time: Monday, 08 April 2024 at 2:00PM - 3:00PM

Rutgers Discrete Mathematics Seminar - Hill 705

Date: April 8, 2024 at 2:00pm

Speaker: Micha Christoph (ETH)

Title: Resolution of the Kohayakawa--Kreuter conjecture 

Abstract: A graph G is said to be Ramsey for a tuple of graphs (H_1,...,H_r) if every r-coloring of the edges of G contains a monochromatic copy of H_i in color i, for some i. A fundamental question at the intersection of Ramsey theory and the theory of random graphs is to determine the threshold at which the binomial random graph G_{n,p} becomes a.a.s. Ramsey for a fixed tuple (H_1,...,H_r), and a famous conjecture of Kohayakawa and Kreuter predicts this threshold. Earlier work of Mousset-Nenadov-Samotij, Bowtell-Hancock-Hyde, and Kuperwasser--Samotij--Wigderson has reduced this probabilistic problem to a deterministic graph decomposition conjecture. We show that this deterministic graph decomposition conjecture is true. 

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