Subdifferential of the joint numerical radius

2022/01/09 by Priyanka Grover, Sushil Singla, Grover, Priyanka +1
Computer Science · Engineering · Mathematics · #15A60 #47A12 #58C20 #Elasticity and Wave Propagation #FOS: Mathematics #Functional Analysis (math.FA) #Iterative Methods for Nonlinear Equations #Matrix Theory and Algorithms

paper · pdf · doi:10.48550/arxiv.2201.03055

openalex publication_date 2022/01/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

An expression for the subdifferential of the joint numerical radius is obtained. Its applications to the best approximation problems in the joint numerical radius are discussed.

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