Inverse Estimates for Lupas-Baskakov Operators
نویسندگان
چکیده
We establish Stechkin-Marchaud-type inequalities for some Feller operators by using some modified Ditzian-Totik modulus of smooth -ness. Then we derive some inverse results for this family of operators. Moreover combining the inverse results with the direct estimates we obtain a approximation equivalent theorem.
منابع مشابه
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ورودعنوان ژورنال:
- JCP
دوره 6 شماره
صفحات -
تاریخ انتشار 2011