On the Total Moduli of Continuity of 2 pi-Periodic Functions of Two Variables in the Space L (2,2)

摘要

The description of the total moduli of continuity of 2 pi-periodic functions of two variables are obtained in the space L (2,2) . The proposed description can be regarded as an extension of the famous results by Besov, Stechkin, and Yudin on the moduli of continuity in L (2) to the two-dimensional case.