Full measure universality and strong meagerness conjecture

For XRX\subseteq\mathbb{R}, call XX strongly meager if X+MRX+M\neq\mathbb{R} for every Lebesgue measure zero set MRM\subseteq\mathbb{R}. Full measure universality characterization conjecture. A subset of R\mathbb{R} is full measure universal if and only if it is a strongly meager subset of R\mathbb{R}. This is the dual of the classification of topologically universal sets. The source says the conjecture is open even for perfect sets and discusses models in which its negation is consistent, while consistency of the conjecture itself is not known.

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Primary source

Yeonwook Jung and Chun-Kit Lai, “Topological Erdős similarity conjecture and strong measure zero sets”, arXiv:2410.01275 (2025).

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