7 papers
On two weight estimates for iterated commutators
Andrei K. Lerner, Sheldy Ombrosi, Israel P. Rivera-Ríos
In this paper we extend the bump conjecture and a particular case of the separated bump conjecture with logarithmic bumps to iterated commutators . Our results are new even…
Fefferman-Stein inequalities for the Hardy-Littlewood maximal function on the infinite rooted -ary tree
Sheldy Ombrosi, Israel P. Rivera-Ríos, Martín D. Safe
In this paper weighted endpoint estimates for the Hardy-Littlewood maximal function on {the infinite rooted} -ary tree are provided. Motivated by Naor and Tao the following Feff…
A note on generalized Fujii-Wilson conditions and BMO spaces
Sheldy Ombrosi, Carlos Pérez, Israel P. Rivera-Ríos +1
In this note we generalize the definition of Fujii-Wilson condition providing quantitative characterizations of some interesting classes of weights, such as , $A_\infty^{…
End-point estimates, extrapolation for multilinear Muckenhoupt classes, and applications
Kangwei Li, José María Martell, Henri Martikainen +2
In this paper we present the results announced in the recent work by the first, second, and fourth authors of the current paper concerning Rubio de Francia extrapolation for the so…
Some remarks on the pointwise sparse domination
Andrei K. Lerner, Sheldy Ombrosi
We obtain an improved version of the pointwise sparse domination principle established by the first author in [19]. This allows us to determine nearly minimal assumptions on a sing…
Extrapolation for multilinear Muckenhoupt classes and applications to the bilinear Hilbert transform
Kangwei Li, José María Martell, Sheldy Ombrosi
In this paper we solve a long standing problem about the multivariable Rubio de Francia extrapolation theorem for the multilinear Muckenhoupt classes , which were exte…