12 citations · 51 across the 25 of their papers we have counts for
4 papers · 1 filter
Spectrally reasonable measures
Przemysław Ohrysko, Michał Wojciechowski
In this paper we investigate the problems related to measures with a natural spectrum (equal to the closure of the set of the values of the Fourier-Stieltjes transform). Since it i…
Anisotropic Ornstein non inequalities
Krystian Kazaniecki, Dmitriy M. Stolyarov, Michal Wojciechowski
We investigate existence of a priori estimates for differential operators in norm: for anisotropic homogeneous differential operators , we study the c…
Independent sums of and
Maciej Rzeszut, Michal Wojciechowski
We construct a new idempotent Fourier multiplier on the Hardy space on the bidisc, which could not be obtained by applying known one dimentional results. The main tool is a new $L^…
On the equivalence between the sets of the trigonometric polynomials
Krystian Kazaniecki, Michał Wojciechowski
In this paper we construct an injection from the linear space of trigonometric polynomials defined on with bounded degrees with respect to each variable to a suitabl…