Geodesic
Analogs of Lorentz theorems for double multiplicative systems
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 2 (2012), pp. 76-85.

Voir la notice de l'article provenant de la source Math-Net.Ru

In this paper we prove Lorentz-type theorems connecting the behavior of Fourier coefficients and the decreasing order of the mixed modulus of continuity for double multiplicative systems with a bounded generating sequence.
Keywords: double multiplicative systems, Lorentz-type theorems, mixed modulus of continuity, generalized monotonicity. 
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R. N. Fadeev. Analogs of Lorentz theorems for double multiplicative systems. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 2 (2012), pp. 76-85. http://geodesic.mathdoc.fr/item/IVM_2012_2_a8/

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