On 2-orthogonal polynomials of Laguerre type.
S. K. Chatterjea has recently proved a class of generating relations involving ultraspherical polynomials from the view point of continuous transformations-groups. The object of the present paper is to point out that this class of generating relations implies the explicit representation, the addition and the multiplication formulas, in addition to the usual generating relation for the ultraspherical polynomials.
An orthogonal system of polynomials, arising from a second-order ordinary differential equation, is presented.