Song, Yu A summation formula for products of electron radial wave function in constant magnetic field. (English) Zbl 0705.33006 Acta Math. Sci. 10, No. 1, 35-37 (1990). The functions \(I_{ns}(\nu)\) considered are products that involve Laguerre polynomials and simpler functions. The author establishes the formula \[ \sum^{\infty}_{n=0} I_{ns}(\nu) I_{ns'}(\nu')= I_{s's}((\sqrt{\nu}-\sqrt{\nu'})^ 2),\quad s>s', \] and its analogues, including those with summation over the second index. Reviewer: P.W.Karlsson MSC: 33C45 Orthogonal polynomials and functions of hypergeometric type (Jacobi, Laguerre, Hermite, Askey scheme, etc.) 81Q05 Closed and approximate solutions to the Schrödinger, Dirac, Klein-Gordon and other equations of quantum mechanics Keywords:orthonormal set of functions; Laguerre polynomials PDFBibTeX XMLCite \textit{Y. Song}, Acta Math. Sci. 10, No. 1, 35--37 (1990; Zbl 0705.33006)