Results 31 to 40 of about 1,388,848 (321)

Continuity of best approximants [PDF]

Proceedings of the American Mathematical Society, 1981
Let C n {C_n} , n ∈ N n \in {\mathbf {N}} , be Φ \Phi -closed lattices in an Orlicz-space L Φ ( Ω , A
Landers, D., Rogge, L.
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Separable approximations of density matrices of composite quantum systems [PDF]

, 2000
We investigate optimal separable approximations (decompositions) of states rho of bipartite quantum systems A and B of arbitrary dimensions MxN following the lines of Ref. [M. Lewenstein and A. Sanpera, Phys. Rev. Lett. 80, 2261 (1998)].
Bennett C H, Busch P, Choi M D, DiVincenzo D P, Englert B G, Horodecki M, Horodecki P, Horodecki R, Horodecki R, Kraus B, Kruszynski P, Lewenstein M, Lewenstein M, Lewenstein M, Lewenstein M, Maciej Lewenstein, Sanpera A, Schrödinger E, Sinisa Karnas, Strömer E, Terhal B, Vedral V, Wellens T, Woronowicz S L   +23 more
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On best rank one approximation of tensors [PDF]

, 2012
In this paper we suggest a new algorithm for the computation of a best rank one approximation of tensors, called alternating singular value decomposition.
Cartwright, De Lathauwer, De Lathauwer, Friedland, Golub, Horn, Kolda, Kroonenberg, Varga, Zhang   +9 more
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Best N-Simultaneous Approximation in Lp(μ,X)

Journal of Function Spaces, 2017
Let X be a Banach space.
Tijani Pakhrou
doaj   +1 more source

Best Approximation Results in Various Frameworks

Axioms, 2019
We first provide a best proximity point result for quasi-noncyclic relatively nonexpansive mappings in the setting of dualistic partial metric spaces. Then, those spaces will be endowed with convexity and a result for a cyclic mapping will be obtained ...
Taoufik Sabar, Abdelhafid Bassou, Mohamed Aamri   +2 more
doaj   +1 more source

Best Approximation Results for Fuzzy-Number-Valued Continuous Functions

Axioms, 2023
In this paper, we study the best approximation of a fixed fuzzy-number-valued continuous function to a subset of fuzzy-number-valued continuous functions.
Juan J. Font, Sergio Macario
doaj   +1 more source

Approximation algorithms for node-weighted prize-collecting Steiner tree problems on planar graphs [PDF]

, 2016
We study the prize-collecting version of the Node-weighted Steiner Tree problem (NWPCST) restricted to planar graphs. We give a new primal-dual Lagrangian-multiplier-preserving (LMP) 3-approximation algorithm for planar NWPCST.
Byrka, Jarosław, Lewandowski, Mateusz, Moldenhauer, Carsten   +2 more
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Canonical Sets of Best L1-Approximation

Journal of Function Spaces and Applications, 2012
In mathematics, the term approximation usually means either interpolation on a point set or approximation with respect to a given distance. There is a concept, which joins the two approaches together, and this is the concept of characterization of the ...
Dimiter Dryanov, Petar Petrov
doaj   +1 more source

Best Simultaneous Approximation in Orlicz Spaces

International Journal of Mathematics and Mathematical Sciences, 2007
Let X be a Banach space and let LΦ(I,X) denote the space of Orlicz X-valued integrable functions on the unit interval I equipped with the Luxemburg norm. In this paper, we present a distance formula dist(f1,f2,LΦ(I,G))Φ, where G is a closed subspace of X,
M. Khandaqji, Sh. Al-Sharif
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Best Copositive Approximation

Journal of Approximation Theory, 1993
Let \(M\) be an \(n\)-dimensional Chebyshev subspace of \(C[a,b]\). For \(f\in C[a,b]\) define \(M_ f\) as the set of functions \(p\in M\) such that \(p(x)f(x)\geq 0\) for all \(x\in [a,b]\). Best copositive approximation to \(f\) is the approximation by elements of \(M_ f\). The author develops a theory for best copositive approximation which is quite
openaire   +2 more sources