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2013 | OriginalPaper | Buchkapitel

4. Algorithmic Projection Operators

verfasst von : Andrzej Cegielski

Erschienen in: Iterative Methods for Fixed Point Problems in Hilbert Spaces

Verlag: Springer Berlin Heidelberg

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Abstract

In Chap. 4 we give examples of algorithmic projection operators and show their properties. These properties are, in most cases, corollaries of general properties of operators presented in Chap. 2. Since the metric projection plays an important role in the construction of algorithmic projection operators, we give the formulas for the metric projection onto simple closed convex subsets usually used in applications. Furthermore, we give properties of a subgradient projection, an alternating projection and its generalized relaxation, a simultaneous projection, a cyclic projection and its extrapolation, an averaged alternating reflection, a Landweber operator and its projected version, a simultaneous cutter and its extrapolation and a surrogate projection.

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Metadaten
Titel
Algorithmic Projection Operators
verfasst von
Andrzej Cegielski
Copyright-Jahr
2013
Verlag
Springer Berlin Heidelberg
DOI
https://doi.org/10.1007/978-3-642-30901-4_4

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