According to a principle named after him, we cannot tell where he is exactly buried. Who is he?

Simple one.

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username, achyuth sanjay, jayanth, Debasish, Vigneshwar, sne, sidsen, Sombe, svgreatest, akhi, duriel, Rohan, Atul Mathew, Prateek Vijayavargia, quaziluffy, p vs np, Sine, Gautam Dn(RV), Johny Walker, Aparna, Ananth, Siddharth Jain, madhur, Jatin, priyananda, Ajay Parasuram, Chandrakant Nair, piezocake, SGK, AmK, sand, aditya, Mo, Neeraj, nisha’s thambi, Vinay Nair, Jean Valjean, shenoyvarun86, shrik, Jobin, ali, abhiram and Sridhar C