Inverse results for generalized Favard-Kantorovich and Favard-Durrmeyer operators in weighted function spaces
Nowak Grzegorz (2006)
Bollettino dell'Unione Matematica Italiana
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We consider the Kantorovich and the Durrmeyer type modifications of the generalized Favard operators and we prove inverse approximation theorems for functions such that , where and , .