Results 11 to 20 of about 1,232,779 (280)

RESTRICTED SIMULTANEOUS DIOPHANTINE APPROXIMATION [PDF]

open access: yesMathematika, 2016
We study the problem of Diophantine approximation on lines in $\mathbb{R}^d$ under certain primality restrictions.
Baier, Stephan, Ghosh, Anish
openaire   +4 more sources

Invariant Points and 𝜀-Simultaneous Approximation [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
We generalize and extend Brosowski-Meinardus type results on invariant points from the set of best approximation to the set of 𝜀-simultaneous approximation. As a consequence some results on 𝜀-approximation and best approximation are also deduced.
Sumit Chandok, T. D. Narang
doaj   +2 more sources

New Generalization of -Best Simultaneous Approximation in Topological Vector Spaces [PDF]

open access: yesAbstract and Applied Analysis, 2013
Let be a nonempty subset of a Hausdorff topological vector space , and let be a real-valued continuous function on . If for each , there exists such that , then is called -simultaneously proximal and is called -best simultaneous approximation for ...
Mahmoud Rawashdeh, Sarah Khalil
doaj   +2 more sources

Best simultaneous L1 approximations [PDF]

open access: yesJournal of Approximation Theory, 1978
AbstractThree possible definitions are proposed for best simultaneous L1 approximation to n continuous real-valued functions, and the relation between best simultaneous approximations and best L1 approximations to the arithmetic mean of the n functions is discussed.
Holland, A.S.B   +3 more
openaire   +2 more sources

New Characterization for Nonlinear Weighted Best Simultaneous Approximation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2009
This paper is concerned with the problem of a wide class of weighted best simultaneous approximation in normed linear spaces, and it establishes a new characterization result for the class of approximation by virtue of the notion of simultaneous regular ...
Xianfa Luo, Delin Wu, Jinsu He
doaj   +2 more sources

Quantitative Khintchine in simultaneous approximation

open access: yesDiscrete and Continuous Dynamical Systems, 2023
11 pages, comments welcome!
Shreyasi Datta, Datta, Shreyasi,
openaire   +4 more sources

Simultaneous Approximation and Quasi-Interpolants [PDF]

open access: yesJournal of Approximation Theory, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhao, Kang
openaire   +3 more sources

On simultaneous approximation [PDF]

open access: yes, 2002
In this paper first we give two different definitions for best simultaneous Lp approximation to n functions and study the relation between best simultaneous approximation and best Lp approximations to the arithmetic mean of n functions.
Karakus H.
core   +3 more sources

On Best Simultaneous Approximation

open access: yesJournal of Approximation Theory, 1997
Let \(X\) be a compact Hausdorff space, \(Y\) be a normed linear space, \(C(X, Y)\) be the vector space of continuous functions from \(X\) to \(Y\) and \(S\) be a subspace of \(C(X, Y).\) Suppose that \(C(X, Y)\) is normed with a given norm \(\| \cdot\| _A\) and that \(U\) is the unit ball of \((\mathbb R^n, \| \cdot\| _B).
Li, Chong, Watson, G.A
openaire   +2 more sources

Approximation hardness of dominating set problems in bounded degree graphs [PDF]

open access: yes, 2008
We study approximation hardness of the Minimum Dominating Set problem and its variants in undirected and directed graphs. Using a similar result obtained by Trevisan for Minimum Set Cover we prove the first explicit approximation lower bounds for various
Chlebikova, Janka   +4 more
core   +1 more source

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