1.

Record Nr.

UNINA9910813548203321

Autore

Jaye Benjamin <1984->

Titolo

The Riesz transform of codimension smaller than one and the Wolff energy / / Benjamin Jaye [and three others]

Pubbl/distr/stampa

Providence, Rhode Island : , : American Mathematical Society, , [2020]

©2020

ISBN

1-4704-6249-4

Descrizione fisica

1 online resource (110 pages)

Collana

Memoirs of the American Mathematical Society ; ; Number 1293

Classificazione

42B3731B15

Disciplina

515.73

Soggetti

Harmonic analysis

Calderón-Zygmund operator

Laplacian operator

Lipschitz spaces

Potential theory (Mathematics)

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

"Forthcoming, volume 266, number 1293."

Nota di bibliografia

Includes bibliographical references.

Nota di contenuto

The general scheme : finding a large Lipschitz oscillation coefficient -- Upward and downward domination -- Preliminary results regarding reflectionless measures -- The basic energy estimates -- Blow up I : The density drop -- The choice of the shell -- Blow up II : doing away with [epsilon] -- Localization around the shell -- The scheme -- Suppressed kernels -- Step I : Calderón-Zygmund theory (from a distribution to an Lp-function) -- Step II : The smoothing operation -- Step III : The variational argument -- Contradiction.

Sommario/riassunto

"Fix d [greater than or equal to] 2, and s [epsilon] (d - 1, d). We characterize the non-negative locally finite non-atomic Borel measures [mu] in Rd for which the associated s-Riesz transform is bounded in L²([mu]) in terms of the Wolff energy. This extends the range of s in which the Mateu-Prat-Verdera characterization of measures with bounded s-Riesz transform is known. As an application, we give a metric characterization of the removable sets for locally Lipschitz continuous solutions of the fractional Laplacian operator (-[delta])[infinity]/2, [infinity] [epsilon] (1, 2), in terms of a well-known capacity from non-linear potential theory. This result contrasts sharply with



removability results for Lipschitz harmonic functions"--