Results 91 to 100 of about 17,042 (194)

Uniqueness of best simultaneous approximation and strictly interpolating subspaces

Journal of Approximation Theory, 1984
If F,G are subsets of a normed linear space E,F bounded, a best simultaneous approximation to F in G is \(y_ 0\in G\) minimizing \(r(y,G)=\sup_{x\in F}\| x-y\|\). The set of best simultaneous approximations to F in G is denoted \(Z_ G(F)\) and called also the ''Chebyshev center'' for F in G, and \(r_ G(F)=\inf_{y\in G}r(y,F)\) is called the ''Chebyshev
openaire   +2 more sources

Algebraic Multigrid Based Preconditioning Approaches for Generalized Continuum Models and Indirect Displacement Control Techniques

International Journal for Numerical Methods in Engineering, Volume 127, Issue 6, 30 March 2026.
ABSTRACT The contribution deals with algebraic multigrid (AMG) based preconditioning methods for the iterative solution of a coupled linear system of equations arising in numerical simulations of failure of quasi‐brittle materials using generalized continuum approaches.
Nasser Alkmim, Peter Gamnitzer, Alexander Dummer, Matthias Neuner, Günter Hofstetter   +4 more
wiley   +1 more source

Interpolating subspaces in approximation theory

Journal of Approximation Theory, 1970
Ault, D.A, Deutsch, F.R, Morris, P.D, Olson, J.E   +3 more
openaire   +2 more sources

Extensions to Extended Tight‐Binding Methods for Transition‐Metal Containing Systems

Journal of Computational Chemistry, Volume 47, Issue 7, March 15, 2026.
We present a new GFN2‐xTB implementation with a geometric direct minimization scheme and a Hubbard‐U correction. We demonstrate that the Hubbard correction improves linearity of the elctronic energy, stabilizes SCF convergence, and enables more accurate spin‐gap predictions in narrow application domains such as specific iron‐containing complexes ...
Siyavash Moradi, Rebecca Tomann, Martin Head‐Gordon, Christopher J. Stein   +3 more
wiley   +1 more source

Common population codes produce extremely nonlinear neural manifolds. [PDF]

Proc Natl Acad Sci U S A, 2023
De A, Chaudhuri R.
europepmc   +1 more source

Joint Estimation Method of DOD and DOA of Bistatic Coprime Array MIMO Radar for Coherent Targets Based on Low-Rank Matrix Reconstruction. [PDF]

Sensors (Basel), 2022
You Z, Hu G, Zhou H, Zheng G.
europepmc   +1 more source

Enhancing unsupervised bearing fault diagnosis through structured prediction in latent subspace. [PDF]

Sci Rep
Liu C, Hu R, Fang X, Luo W, Zhu C.
europepmc   +1 more source

Hierarchical secure key assignment scheme. [PDF]

PLoS One
Celiktas B, Çelikbilek I, Guzey S, Ozdemir E.   +3 more
europepmc   +1 more source

PSO-DT based BagDT: a robust lightweight ensemble framework for efficient feature selection and DDoS attack detection in IoT environment. [PDF]

Sci Rep
Shirley JJ, Priya M.
europepmc   +1 more source

Unifying machine learning and interpolation theory via interpolating neural networks. [PDF]

Nat Commun
Park C, Saha S, Guo J, Zhang H, Xie X, Bessa MA, Qian D, Chen W, Wanger GJ, Cao J, Hughes TJR, Liu WK.   +11 more
europepmc   +1 more source