English

Multipartite Ramsey numbers of complete bipartite graphs arising from algebraic combinatorial structures

Combinatorics 2023-07-20 v1

Abstract

In 2019, Perondi and Carmelo determined the set multipartite Ramsey number of particular complete bipartite graphs by establishing a relationship between the set multipartite Ramsey number, Hadamard matrices, and strongly regular graphs, which is a breakthrough in Ramsey theory. However, since Hadamard matrices of order not divisible by 4 do not exist, many open problems have arisen. In this paper, we generalize Perondi and Carmelo's results by introducing the [α][\alpha]-Hadamard matrix that we conjecture exists for arbitrary order. Finally, we determine set and size multipartite Ramsey numbers for particular complete bipartite graphs.

Keywords

Cite

@article{arxiv.2307.09736,
  title  = {Multipartite Ramsey numbers of complete bipartite graphs arising from algebraic combinatorial structures},
  author = {I Wayan Palton Anuwiksa and Rinovia Simanjuntak and Edy Tri Baskoro},
  journal= {arXiv preprint arXiv:2307.09736},
  year   = {2023}
}

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15 pages