2025/05/14 by Hao Chen, Jonathan A. Noel, Chen, Hao +1 · 2 citations
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paper · pdf · doi:10.48550/arxiv.2505.09809
In this short note, we use flag algebras to prove that the number of colour alternating 6-cycles in a red/blue colouring of a large clique is asymptotically maximized by a uniformly random colouring. This settles the first open case of a problem of Basit, Granet, Horsley, Kündgen and Staden.