4 citations · 9 across the 9 of their papers we have counts for
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math.CA1995★ 3 cited
Ultraspherical multipliers revisited
George Gasper, Walter Trebels
Sufficient ultraspherical multiplier criteria are refined in such a way that they are comparable with necessary multiplier conditions. Also new necessary conditions for Jacobi mult…
math.CA1995
A Riemann--Lebesgue lemma for Jacobi expansions
George Gasper, Walter Trebels
A Lemma of Riemann--Lebesgue type for Fourier--Jacobi coefficients is derived. Via integral representations of Dirichlet--Mehler type for Jacobi polynomials its proof directly redu…