Optimal asymptotic estimates for Laguerre and Hermite coefficient decay for functions with algebraic and logarithmic singularities, yielding convergence rates for spectral orthogonal projections.
Szeg ˝o, Orthogonal polynomials, American Mathematical Society , 1939
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Optimal asymptotic analyses on Laguerre and Hermite orthogonal approximation for functions of algebraic and logarithmic regularitiesYali
Optimal asymptotic estimates for Laguerre and Hermite coefficient decay for functions with algebraic and logarithmic singularities, yielding convergence rates for spectral orthogonal projections.