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arXiv · 2307.09736

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

I Wayan Palton Anuwiksa·Rinovia Simanjuntak·Edy Tri Baskoro
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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 $[α]$-Hadamard matrix that we conjecture exists for arbitrary order. Finally, we determine set and size multipartite Ramsey numbers for particular complete bipartite graphs.

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I Wayan Palton Anuwiksa, Rinovia Simanjuntak, Edy Tri Baskoro. 2023-07-19. Multipartite Ramsey numbers of complete bipartite graphs arising from algebraic combinatorial structures. https://arxiv.org/abs/2307.09736

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