Results 31 to 40 of about 220,874 (298)

BEST APPROXIMATION AND BEST SIMULTANEOUS APPROXIMATION IN ULTRAMETRIC SPACES

Demonstratio Mathematica, 1996
A metric space \(X\) is ultrametric if the metric \(d\) satisfies the strong triangle inequality \(d(x,y)\leq\max\{d(x,z),d(z,y)\}\) for every \(x,y,z\in X\). The author considers various best approximation problems in an ultrametric setting and their relationship with the proximinal property.
openaire   +1 more source

Best Approximation Of Bounded Functions By Continuous Functions

, 2015
[No abstract available]412135148Amir, Chebyshev centers and uniform convexity (1978) Pacific Journal of Mathematics, 77, pp. 1-6Amir, Deutsch, Approximation by certain subspaces in the Banach space of continuous vector-valued functions (1979) J.
Roversi M.S.M., ROVERSI, MSM
core   +1 more source

Best neural simultaneous approximation

, 2020
For many years, approximation concepts has been investigated in view of neural networks for the several applications of the two topics. Researchers studied simultaneous approximation in the 2-normed space and proved essential theorems concern with ...
S. Bhaya, Eman, Almurieb, Hawraa Abbas, Bhaya, Eman S., Abbas Almurieb, Hawraa   +3 more
core   +1 more source

Best approximation in b-modular spaces

مجلة بغداد للعلوم
In this paper, some basic notions and facts in the b-modular space similar to those in the modular spaces as a type of generalization are given.  For example, concepts of convergence, best approximate, uniformly convexity etc.
Hiba Adel Jabbar , Samira Naji Kadhim , Salwa Salman Abed   +2 more
doaj   +1 more source

Best approximation in Chebyshev subspaces of L(l_{1}^{n},l_{1}^{n}) [PDF]

Opuscula Mathematica, 2009
Chebyshev subspaces of \(\mathcal{L}(l_1^n,l_1^n)\) are studied. A construction of a \(k\)-dimensional Chebyshev (not interpolating) subspace is given.
Joanna Kowynia
doaj   +1 more source

On Best Approximation By Rational And Holomorphic Mappings Between Banach Spaces

, 2015
After proving a generalized version of Garkavi's theorem, we give as applications proofs of existence results on best approximation by polynomials, and fractional linear and holomorphic operators between Banach spaces.
Roversi M.S.M., CHIACCHIO, AO, Chiacchio A.O., MATOS, MC, ROVERSI, MSM, Matos M.C.   +5 more
core   +1 more source

A topological approach to Best Approximation Theory

Applied General Topology, 2004
The main goal of this paper is to put some light in several arguments that have been used through the time in many contexts of Best Approximation Theory to produce proximinality results. In all these works, the main idea was to prove that the sets we are
Samuel G. Moreno, Jose María Almira, Esther M. García-Caballero, J.M. Quesada   +3 more
doaj   +1 more source

Clinical and Biological Features of Response in Resistant Neuroblastoma to 131I‐Metaiodobenzylguanidine Radiotherapy in the Anti‐GD2 Immunotherapy Era

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background 131I‐metaiodobenzylguanidine (131I‐MIBG) radiotherapy is a key treatment for relapsed and refractory (R/R) neuroblastoma (NB). Patients with R/R disease treated in the modern era are increasingly exposed to anti‐GD2 immunotherapy, which exerts selective pressure and may modify both tumor cell state and microenvironment.
Benjamin J. Lerman, Katherine K. Matthay, Fabienne Hollinger, Catriona Black, Ann A. Lazar, Miguel Pampaloni, Steven G. DuBois, Kieuhoa T. Vo   +7 more
wiley   +1 more source

Serological Benefit of SARS‐CoV‐2 Vaccination Relative to Infection in Children With Acute Lymphoblastic Leukemia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with acute lymphoblastic leukemia (ALL) are at risk of severe outcomes from SARS‐CoV‐2 (SCV2). In the post‐pandemic context, where most children have been infected with SCV2, there are limited data on whether vaccination remains beneficial in children with ALL.
Janna R. Shapiro, Freda Qi, Karen Colwill, Alina D. Dorogy, Ying Liu, Michelle Science, Anne‐Claude Gingras, James M. Rini, Sumit Gupta, Sarah Alexander, Shelly Bolotin, Tania H. Watts   +11 more
wiley   +1 more source

A RESULT ON BEST APPROXIMATION

Tamkang Journal of Mathematics, 1998
Using a common fixed point theorem for noncommuting mappings of Pant [4], we improve and extend a result of Sahab, Khan and Sessa [5] on best approximation.
openaire   +3 more sources