Ulyanov inequalities for the mixed moduli of smoothness in mixed metrics

Author:

Simonov Boris V.1,Jumabayeva Ainur A.2

Affiliation:

1. IVolgograd State Technical University , Volgograd , 400131 , Russia

2. L. N. Gumilyov Eurasian National University , Satpayev 2, 010000 Astana , Kazakhstan

Abstract

Abstract In this paper, mixed moduli of smoothness of functions of two variables are studied. We prove Ulyanov-type inequalities between mixed moduli of smoothness of positive orders in different metrics. Estimates for the mixed moduli of smoothness of the derivative of a function are also obtained in terms of the mixed moduli of smoothness of the function itself.

Publisher

Walter de Gruyter GmbH

Reference40 articles.

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