First to answer and accepted with score of 10 or more. This badge can be awarded multiple times.
earned this badge 5 times
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