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What's the status of the following relationship between Ramanujan's $\tau$ function and the simple Lie algebras?
Awarded Apr 11 '12 at 15:50
Awarded Feb 12 '12 at 12:50
What was Casimir's precise role in describing the center of the universal enveloping algebra of a semisimple Lie algebra?
Awarded Aug 4 '11 at 7:50
Awarded Nov 16 '10 at 19:20
Awarded Oct 6 '10 at 12:35