Abstract. De la Vallée Poussin means are used to prove Jackson--Favard type estimates for weighted algebraic polynomials with Jacobi and Laguerre-like weights.
AMS Subject Classification
(1991): 41A10, 42C10, 33C45
Keyword(s):
De la Vallée Poussin mean,
Jackson-type inequality,
weighted polynomial approximation,
Laguerre and Jacobi polynomials
Received March 29, 2007, and in revised form April 28, 2008. (Registered under 6009/2009.)
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