The curve 1 became very famous after 2 challenged 3 to apply something he had discovered. 3 did it easily. Identify 1,2 and 3.

1. 

2. 3.

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sumo_ftb, Neeraj, Dibyo, Martin, Raghuvansh, Rithwik K, nishansolo, kal, sidsen, darthshak, username, emrohit, svgreatest, udupendra, Srikanth.M.G, Kaiser Soze, Subhash L, Vinay Nair, p vs np, alephnull, Gautam Dn(RV), akhi, shenoyvarun86, Jean Valjean, Aparna, Samdrisht, sand, u2001137, Chandler, Nakul, shrik, malcaluffin, Ananth, abhijeet, Mo, K.S.Manish and Atul Mathew