36 citations · 155 across the 25 of their papers we have counts for
5 papers · 1 filter
Calderón-Zygmund operators in the Bessel setting
Jorge J. Betancor, Alejandro J. Castro, Adam Nowak
We study several fundamental operators in harmonic analysis related to Bessel operators, including maximal operators related to heat and Poisson semigroups, Littlewood-Paley-Stein…
On -contractivity of Laguerre semigroups
Adam Nowak, Krzysztof Stempak
We study several Laguerre semigroups appearing in the literature and find sharp ranges of type parameters for which these semigroups are contractive on all spaces, $1\le p \l…
Calderón-Zygmund operators related to Jacobi expansions
Adam Nowak, Peter Sjögren
We study several fundamental operators in harmonic analysis related to Jacobi expansions, including Riesz transforms, imaginary powers of the Jacobi operator, the Jacobi-Poisson se…
A symmetrized conjugacy scheme for orthogonal expansions
Adam Nowak, Krzysztof Stempak
We establish a symmetrization procedure in a context of general orthogonal expansions associated with a second order differential operator , a `Laplacian'. Combined with a unifi…
Negative powers of Laguerre operators
Adam Nowak, Krzysztof Stempak
We study negative powers of Laguerre differential operators in , . For these operators we prove two-weight estimates, with ranges of depending on . The…