Estimates of mixed norms of functions representable by series over sine and cosine products with multiple-monotone coefficients / T. M. Vukolova. // Vestnik Moskovskogo Universiteta. Seriya 1. Matematika. Mekhanika. 2014. № 5. P. 7-17 [Moscow Univ. Math. Bulletin. Vol. 72, N 2, 2017. P. 0].

In this paper we prove lower and upper bounds for norms of mixed functions being sums of series in products of cosine and sine functions.

Key words: mixed norm, series in cosine and sine products, monotone coefficients.