= A cyclic non-Ramsey heptagon by Dömötör Pálvölgyi
{c}
{tag=Work by Dömötör Pálvölgyi}
{title2=20 September 2026 preprint}
Primary preprint arXiv:2609.23327v1: https://arxiv.org/abs/2609.23327v1
Theorem1 reports a seven-point non-Ramsey configuration on a circle for every transcendental parameter r>2. The source is a preprint; its first-page disclosure and author note distinguish the main result from further appendix claims. The spherical-point-set entry attributes the reported counterexample to this dated preprint rather than asserting an undated open status.
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