%0 Conference Article %T PROPERTIES OF MIXED MODULI OF SMOOTHNESS OF FUNCTIONS WITH MONOTONE FOURIER COEFFICIENTS %A Simonov, A.B. %A Simonov, B.V. %K metric, mixed moduli of smoothness, monotone Fourier coefficients %J OPERATOR EQUATIONS AND SOME RELATED ISSUES IN APPLIED MATHEMATICS %D 2026 %P 5 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov