Results 11 to 20 of about 430,568 (269)

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.Comment: 16 pages.
Baier, Stephan, Ghosh, Anish
core   +3 more sources

Simultaneous diophantine approximation [PDF]

open access: yesBulletin of the Australian Mathematical Society, 1972
AbstractUsing a method suggested by E. S. Barnes, it is shown that the simultaneous inequalities r(p — αr)2 < c, r(q — βr)2 < c have an infinity of integral solutions p, q, r (with r > 0), for arbitrary irrationals α and β, provided that c > 1/2.6394.
openaire   +3 more sources

The Auxiliary Mass Method beyond the Local Potential Approximation [PDF]

open access: yes, 1999
We show that the evolution equation of the effective potential in the auxiliary mass method corresponds to a leading approximation of a certain series. This series is derived from an evolution equation of an effective action using a derivative expansion.
Aoki   +36 more
core   +3 more sources

New Generalization of -Best Simultaneous Approximation in Topological Vector Spaces

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   +1 more source

Simultaneous Diophantine approximation

open access: yesDuke Mathematical Journal, 1946
The simplest problems of Diophantine approximation relate to the approximation of a single irrational number 0 by rational numbers pjq, and the principal question is how small we can make the error 0 — pjq in relation to q for infinitely many approximations. It is well known that this question can be answered almost completely in terms of the continued
Davenport, H., Mahler, K.
openaire   +2 more sources

Optimal Simultaneous Approximation via 𝒜-Summability

open access: yesAbstract and Applied Analysis, 2013
We present optimal convergence results for the mth derivative of a function by sequences of linear operators. The usual convergence is replaced by 𝒜-summability, with 𝒜 being a sequence of infinite matrices with nonnegative real entries, and the ...
Francisco Aguilera   +2 more
doaj   +1 more source

Algorithms for Simultaneous Padé Approximations [PDF]

open access: yesProceedings of the ACM on International Symposium on Symbolic and Algebraic Computation, 2016
ISSAC ...
Nielsen, Johan S. R., Storjohann, Arne
openaire   +2 more sources

Simultaneous approximation for the Phillips operators

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
We study the simultaneous approximation properties of the well-known Phillips operators. We establish the rate of convergence of the Phillips operators in simultaneous approximation by means of the decomposition technique for functions of bounded ...
N. K. Govil   +2 more
doaj   +1 more source

A Modification of the Mixed Joint Universality Theorem for a Class of Zeta Functions

open access: yesMathematics, 2022
The property of zeta functions on mixed joint universality in the Voronin’s sense states that any two holomorphic functions can be approximated simultaneously with an accuracy of ε>0 by suitable vertical shifts of the pair consisting the Riemann and ...
Roma Kačinskaitė   +1 more
doaj   +1 more source

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   +1 more source

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