Erdős problem 316Is it true that if A⊆N∖{1}A \subseteq \mathbb{N}\setminus\{1\} is a finite set with ∑n∈A1n<2\sum_{n \in A} \frac{1}{n} < 2 then there is a partition A=A1⊔A2A=A_1 \sqcup A_2 such that ∑n∈Ai1n<1\sum_{n \in A_i} \frac{1}{n} < 1 for i=1,2i=1,2?WorkspaceContinue locallyOpen sourceSign in to contributeOpen this exact Problem, source revision, and authority Repository in Workbench. This handoff does not clone, switch, upload, or execute anything.FilesErdős problem 3166 retained source recordsCanvaspublic previewSource#316→ResultNone→Checks0