3 papers
math.FA2026
Radial Schur multipliers on trees and the failure of Fourier-Schur transference
Adrian González-Pérez, Javier Parcet, Jorge Pérez García +1
Given and a function , we provide a characterization of radial Schur multipliers on the Schatten -cla…
math.FA2024
Riesz-Schur transforms
Adrian González-Pérez, Javier Parcet, Jorge Pérez García +1
We investigate nontrigonometric forms of Riesz transforms in the context of Schur multipliers. This refines Grothendieck-Haagerup's endpoint criterion with a new condition for the…
math.FA2022
Noncommutative Cotlar identities for groups acting on tree-like structures
Adrian Gonzalez-Perez, Javier Parcet, Runlian Xia
Let be a noncommutative Fourier multiplier. In recent work, Mei and Ricard introduced a noncommutative analogue of Cotlar's identity in order to prove that certain multiplier…