Approximation in AC(𝜎)

For a nonempty compact subset sigma in the plane, the space AC(sigma) is the closure of the space of complex polynomials in two real variables under a particular variation norm. In the classical setting, AC[0, 1] contains several other useful dense subsets, such as continuous piecewise linear functi...

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Hauptverfasser: Doust, Ian (VerfasserIn) , Leinert, Michael (VerfasserIn) , Stoneham, Alan (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 07 November 2022
In: Banach journal of mathematical analysis
Year: 2022, Jahrgang: 17, Heft: 1, Pages: 1-15
ISSN:1735-8787
DOI:10.1007/s43037-022-00229-y
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/s43037-022-00229-y
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Verfasserangaben:Ian Doust, Michael Leinert, Alan Stoneham
Beschreibung
Zusammenfassung:For a nonempty compact subset sigma in the plane, the space AC(sigma) is the closure of the space of complex polynomials in two real variables under a particular variation norm. In the classical setting, AC[0, 1] contains several other useful dense subsets, such as continuous piecewise linear functions, C1 functions and Lipschitz functions. In this paper, we examine analogues of these results in this more general setting.
Beschreibung:Gesehen am 21.12.2022
Beschreibung:Online Resource
ISSN:1735-8787
DOI:10.1007/s43037-022-00229-y