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 , .
Consideriamo le modificazioni di tipo Kantorovich e Durrmeyer degli operatori generalizzati di Favard e proviamo i teoremi inversi di approssimazione per funzioni tali che , dove e , .
@article{BUMI_2006_8_9B_1_183_0, author = {Nowak Grzegorz}, title = {Inverse results for generalized Favard-Kantorovich and Favard-Durrmeyer operators in weighted function spaces}, journal = {Bollettino dell'Unione Matematica Italiana}, volume = {9-A}, year = {2006}, pages = {183-195}, zbl = {1150.41016}, mrnumber = {2204906}, language = {en}, url = {http://dml.mathdoc.fr/item/BUMI_2006_8_9B_1_183_0} }
Grzegorz, Nowak. Inverse results for generalized Favard-Kantorovich and Favard-Durrmeyer operators in weighted function spaces. Bollettino dell'Unione Matematica Italiana, Tome 9-A (2006) pp. 183-195. http://gdmltest.u-ga.fr/item/BUMI_2006_8_9B_1_183_0/
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