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Timeline for Expanders except for commutativity?

Current License: CC BY-SA 4.0

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Oct 8 at 13:40 comment added H A Helfgott Here "$d$ small" presumably means "$d$ less than $\frac{2 \log |V|}{\log \log |V|}$ or so".
Oct 8 at 13:35 history answered Will Sawin CC BY-SA 4.0