The local geometry of idempotent Schur multipliers

The local geometry of idempotent Schur multipliers

A Schur multiplier is a linear map on matrices which acts on its entries by multiplication with some function, called the symbol. We consider idempotent Schur multipliers, whose symbols are indicator functions of smooth Euclidean domains. Given \(1

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Veröffentlicht in:arXiv.org 2024-04
Hauptverfasser: Parcet, Javier, de la Salle, Mikael, Tablate, Eduardo
Format: Artikel
Sprache:eng
Schlagworte:
Fourier transforms
Hilbert transformation
Lie groups
Mathematical analysis
Matrices (mathematics)
Multipliers
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Zusammenfassung:A Schur multiplier is a linear map on matrices which acts on its entries by multiplication with some function, called the symbol. We consider idempotent Schur multipliers, whose symbols are indicator functions of smooth Euclidean domains. Given \(1
ISSN:2331-8422