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Explicit constant in Green/Tao's version of Freiman's Theorem?
Green and Tao's version of Freiman's theorem over finite fields (doi:10.1017/S0963548309009821) is as follows:
If $A$ is a set in $\mathbb{F}_2^n$ for which $|A+A| \leqslant K|A|$, then $A$ is contain …