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2024/105/1-2 (13) — DOI: 10.5486/PMD.2024.9840 — pp. 213-222

Norm-multiplicative mappings between spaces of vector-valued continuous functions

Authors: Maliheh Hosseini Orcid.org link for Maliheh Hosseini and Juan J. Font Orcid.org link for Juan J. Font

Abstract:

We extend the concept of norm-multiplicativity of a (not necessarily linear) mapping defined between spaces of scalar-valued continuous functions to the vector-valued setting, and prove that in this context norm-multiplicative surjective maps are composition in norm. We also provide several examples to emphasize the differences between isometries and norm-multiplicative maps.

Keywords: norm-multiplicative maps, vector-valued continuous functions, nonlinear norm preservers

Mathematics Subject Classification: 47B38, 46J10, 47B33