Best Approximation in Numerical Radius
DOI10.1080/01630563.2011.571886zbMath1222.41026arXiv1007.2205OpenAlexW2023947418MaRDI QIDQ3016312
Grzegorz Lewicki, Asuman Güven Aksoy
Publication date: 15 July 2011
Published in: Numerical Functional Analysis and Optimization (Search for Journal in Brave)
Full work available at URL: https://arxiv.org/abs/1007.2205
best approximationnumerical radiusnumerical indexminimal extensionsstrongly unique best approximation.
Fixed-point theorems (47H10) Numerical range, numerical radius (47A12) Abstract approximation theory (approximation in normed linear spaces and other abstract spaces) (41A65) Approximation by operators (in particular, by integral operators) (41A35)
Related Items (5)
Cites Work
- Unnamed Item
- Unnamed Item
- Three-dimensional subspace of \(l^{(5)}_\infty\) with maximal projection constant
- Approximation theory in tensor product spaces
- Spaces with large projection constants
- Minimal projections on hyperplanes in sequence spaces
- Minimal projections in \(\mathcal L_1\)-spaces
- Minimal extensions in tensor product spaces
- Minimal projections in spaces of functions of \(N\) variables
- Symmetric spaces with maximal projection constants
- Chalmers-Metcalf operator and uniqueness of minimal projections
- On the numerical index of Banach spaces
- Charakterisierung bester Approximationen in normierten Vektorräumen
- Minimal multi-convex projections
- Minimal numerical-radius extensions of operators
- The Determination of Minimal Projections and Extensions in L 1
- Projection constants of symmetric spaces and variants of Khintchine's inequality
- Uniqueness of minimal projections onto two-dimensional subspaces
- Numerical index and renorming
- On the numerical index of vector-valued function spaces
- Minimal projections in tensor-product spaces
- Uniqueness of minimal projections in smooth matrix spaces
This page was built for publication: Best Approximation in Numerical Radius
