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arXiv · 2111.08076

Sidon-Ramsey and $B_{h}$-Ramsey numbers

Manuel A. Espinosa-García·Amanda Montejano·Edgardo Roldán-Pensado·J. David Suárez
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Abstract

For a given positive integer $k$, the Sidon-Ramsey number $\SR(k)$ is defined as the minimum value of $n$ such that, in every partition of the set $[1, n]$ into $k$ parts, there exists a part that contains two distinct pairs of numbers with the same sum. In other words, there is a part that is not a Sidon set. In this paper, we investigate the asymptotic behavior of this parameter and two generalizations of it. The first generalization involves replacing pairs of numbers with $h$-tuples, such that in every partition of $[1, n]$ into $k$ parts, there exists a part that contains two distinct $h$-tuples with the same sum. Alternatively, there is a part that is not a $B_h$ set. The second generalization considers the scenario where the interval $[1, n]$ is substituted with a non-necessarily symmetric $d$-dimensional box of the form $\prod_{i=1}^d[1,n_i]$. For the general case of $h\geq 3$ and non-symmetric boxes, before applying our method to obtain the Ramsey-type result, we needed to establish an upper bound for the corresponding density parameter.

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Manuel A. Espinosa-García, Amanda Montejano, Edgardo Roldán-Pensado, J. David Suárez. 2021-11-15. Sidon-Ramsey and $B_{h}$-Ramsey numbers. https://arxiv.org/abs/2111.08076

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