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Best approximants relative to a C$^*$-subalgebra, joint numerical range and subdifferentials

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Bibliographic Details
Main Authors:	Bottazzi, Tamara, Varela, Alejandro
Format:	Preprint
Published:	2026
Subjects:	Functional Analysis Operator Algebras 15A60, 41A50, 47B15
Online Access:	Acceder al recurso
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