In the notation of Watson (1966),
Theta Operator
See also
DerivativeExplore with Wolfram|Alpha
References
Watson, G. N. A Treatise on the Theory of Bessel Functions, 2nd ed. Cambridge, England: Cambridge University Press, 1966.Referenced on Wolfram|Alpha
Theta OperatorCite this as:
Weisstein, Eric W. "Theta Operator." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/ThetaOperator.html