Estimates of Norms of Functions Represented as Double Series Over Cosines with Multiple-Monotone Coefficients / T. M. Vukolova. // Vestnik Moskovskogo Universiteta. Seriya 1. Matematika. Mekhanika. 2017. № 5. P. 3-13 [Moscow Univ. Math. Bulletin. Vol. 72, N 2, 2017. P. 181-191].

Lower and upper bounds are proved for the norms of functions being sums of double series in cosines.

Key words: norm, series in the works of cosines, monotone coefficients.