Rohatgi's almost-every matching conjecture for ordered Ramsey numbers

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Let M<M^< be an ordered matching on nn vertices with interval chromatic number hihi, and let K3<K^<_3 be the ordered triangle. For a positive integer hihi, there is a constant psilon(hi)>0psilon(hi)>0 such that

R<(M<,K3<)≤O(n2−psilon(χ))R_<(M^<,K^<_3)\leq O(n^{2-psilon(\chi)})

for almost every ordered matching M<M^< on nn vertices with interval chromatic number hihi.

Rohatgi's conjecture. The stated subquadratic bound holds for almost every ordered matching of each fixed interval chromatic number.

References

Primary source

Martin Balko, “A Survey on Ordered Ramsey Numbers”, arXiv:2502.02155 (2025).

Additional references

3 papers in this index state this conjecture (2022–2025). The statement above is taken from the most recent of them; the others are arXiv:2305.17933, arXiv:2201.07637.

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