Does anyone know what the formula is for the following: <j m | S^2_{+} |j m > = ? Reference to equations in Sakurai would be helpful in deriving the relation. I would suspect 3.5.37 but what about the delta_j j' ? Does anyone know what I'm talking about?
These appear to be formulas for finding the spin, and or angular momentum, of a wave-function. What is your question exactly?