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§25.6(iii) Recursion Formulas…
Gauss–Laguerre Formula… ►The monic and orthonormal recursion relations of this section are both closely related to the Lanczos recursion relation in §3.2(vi). … ►a complex Gauss quadrature formula is available. …
Martín et al. (1992) provides two simple formulas for approximating to graphical accuracy, one for , the other for .
Corless et al. (1992) describe a method of approximation based on subdividing into a triangular mesh, with values of , stored at the nodes. and are then computed from Taylor-series expansions centered at one of the nearest nodes. The Taylor coefficients are generated by recursion, starting from the stored values of , at the node. Similarly for , .