Does anyone know of a good reference for central extensions of Lie groups and Lie algebras, especially as relates to projective representations, conformal field theory, and theoretical physics? Yes, I know I should ask Dr. Frenkel, but he’s never around (and even less often in the summer).
My wife may have one, but it’s locked away in Pandora’s box down in the basement.
You’re soooooo helpful.
Thought I’d give it a bump, and see if anyone bit.