= An improved lower bound for the union-closed sets conjecture by Will Sawin
{c}
{tag=Work by Will Sawin}
{title2=2022 preprint, revised 2023}
By <Will Sawin>. Primary preprint arXiv:2211.11504, version3 (19 June 2023): https://arxiv.org/abs/2211.11504v3
Theorems1–2 and their proofs give the golden-ratio frequency bound through entropy growth for independent unions. The nontrivial-family application requires a nonempty union; singleton families containing a nonempty set satisfy the bound directly.
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