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RT @ThetaHedgie: Today's classic: A. Lubotzky, R. Phillips and P. Sarnak, "Ramanujan graphs" https://t.co/lBF3kbfm7k https://t.co/Pzz5VHmQct
RT @ThetaHedgie: Today's classic: A. Lubotzky, R. Phillips and P. Sarnak, "Ramanujan graphs" https://t.co/lBF3kbfm7k https://t.co/Pzz5VHmQct
RT @isomorphisms: Lubotzky + Phillips + Sarnak Ramanujan graphs 1988 https://t.co/eV6hywhEX6
Lubotzky + Phillips + Sarnak Ramanujan graphs 1988 https://t.co/eV6hywhEX6