activity
20122023
most citedExtrapolation for multilinear Muckenhoupt classes and applications to the bilinear Hilbert transform

50 citations · 397 across the 45 of their papers we have counts for

collaborators

48 papers

math.CA2023

Zygmund dilations: bilinear analysis and commutator estimates

Emil Airta, Kangwei Li, Henri Martikainen

We develop both bilinear theory and commutator estimates in the context of entangled dilations, specifically Zygmund dilations $(x_1, x_2, x_3) \mapsto (δ_1 x_1, δ_2 x_2, δ_1 δ_2 x…

math.CA2022

Upper endpoint estimates and extrapolation for commutators

Kangwei Li, Sheldy Ombrosi, Israel P. Rivera-Ríos

In this note we revisit the upper endpoint estimates for commutators following the line by Harboure, Segovia and Torrea. Relying upon the suitable BMO subspace suited for the commu…

math.FA2022

The -to- Compactness of Commutators with

Tuomas Hytönen, Kangwei Li, Jin Tao +1

Let , , and be a non-degenerate Calderón--Zygmund operator. We show that the commutator is compact from to…

math.CA2022

Exotic Calderón-Zygmund operators

Tuomas Hytönen, Kangwei Li, Henri Martikainen +1

We study singular integral operators with kernels that are more singular than standard Calderón-Zygmund kernels, but less singular than bi-parameter product Calderón-Zygmund kernel…

math.CA2022★ 3 cited

Multiresolution analysis and Zygmund dilations

Tuomas Hytönen, Kangwei Li, Henri Martikainen +1

Zygmund dilations are a group of dilations lying in between the standard product theory and the one-parameter setting - in $\mathbb{R}^3 = \mathbb{R} \times \mathbb{R} \times \math…

math.CA2021

Two-weight inequalities for multilinear commutators in product spaces

Emil Airta, Kangwei Li, Henri Martikainen

This note is devoted to establishing two-weight estimates for commutators of singular integrals. We combine multilinearity with product spaces. A new type of two-weight extrapolati…