OPENNOTORIOUSgraph theoryRamsey theory
If $R(k)$ is the diagonal Ramsey number, find $\lim_{k\to \infty}R(k)^{1/k}$.
Notes: Erdos established sqrt(2) <= liminf R(k)^{1/k} <= limsup R(k)^{1/k} <= 4. Gupta, Ndiaye, Norin, and Wei improved the upper bound to 3.7992. Erdos conjectured the limit might be 2.
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