Results 1 to 10 of about 157,687 (126)

Approximation of complex algebraic numbers by algebraic numbers of bounded degree

open access: yesANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, 2007
We investigate how well complex algebraic numbers can be approximated by algebraic numbers of degree at most n. We also investigate how well complex algebraic numbers can be approximated by algebraic integers of degree at most n+1.
Bugeaud, Yann, Evertse, Jan-Hendrik
core   +4 more sources

Approximation of an algebraic number by products of rational numbers and units [PDF]

open access: yesJournal of the Australian Mathematical Society, 2013
We relate a previous result of ours on families of Diophantine equations having only trivial solutions with a result on the approximation of an algebraic number by products of rational numbers and units.
Levesque, Claude, Waldschmidt, Michel
core   +4 more sources

Simultaneous approximation of a real number by all conjugates of an algebraic number [PDF]

open access: yesActa Arithmetica, 2007
Using a method of H. Davenport and W. M. Schmidt, we show that, for each positive integer n, the ratio 2/n is the optimal exponent of simultaneous approximation to real irrational numbers 1) by all conjugates of algebraic numbers of degree n, and 2) by ...
Alain, Guillaume
core   +2 more sources

Multilevel information fusion for cryptographic substitution box construction based on inevitable random noise in medical imaging

open access: yesScientific Reports, 2021
Block cipher has been a standout amongst the most reliable option by which data security is accomplished. Block cipher strength against various attacks relies on substitution boxes.
Muhammad Fahad Khan   +3 more
doaj   +1 more source

On Joint Universality in the Selberg–Steuding Class

open access: yesMathematics, 2023
The famous Selberg class is defined axiomatically and consists of Dirichlet series satisfying four axioms (Ramanujan hypothesis, analytic continuation, functional equation, multiplicativity).
Roma Kačinskaitė   +2 more
doaj   +1 more source

Joint Universality of the Zeta-Functions of Cusp Forms

open access: yesMathematics, 2021
Let F be the normalized Hecke-eigen cusp form for the full modular group and ζ(s,F) be the corresponding zeta-function. In the paper, the joint universality theorem on the approximation of a collection of analytic functions by shifts (ζ(s+ih1τ,F),…,ζ(s ...
Renata Macaitienė
doaj   +1 more source

Remarks on the approximation to an algebraic number by algebraic numbers. [PDF]

open access: yesMichigan Mathematical Journal, 1986
Die Verff. wenden eine in zwei früheren Arbeiten [vgl. \textit{E. Bombieri}, Acta Math. 148, 255-296 (1982; Zbl 0505.10015) und Verff., J. Reine Angew. Math. 342, 173-196 (1983; Zbl 0516.10024)] entwickelte Methode an, um eine algebraische Zahl durch algebraische Zahlen aus einem passenden reellen algebraischen Zahlkörper effektiv abzuschätzen.
Bombieri, E., Mueller, J.
openaire   +3 more sources

Statistical Deferred Nörlund Summability and Korovkin-Type Approximation Theorem

open access: yesMathematics, 2020
The concept of the deferred Nörlund equi-statistical convergence was introduced and studied by Srivastava et al. [Rev. Real Acad. Cienc. Exactas Fís. Nat. Ser. A Mat. (RACSAM) 112 (2018), 1487–1501].
Hari Mohan Srivastava   +2 more
doaj   +1 more source

Product of deferred Cesàro and deferred weighted statistical probability convergence and its applications to Korovkin-type theorems

open access: yesUniversitas Scientiarum, 2020
In the present work, we introduce and study the notion of statistical probability convergence for sequences of random variables as well as the idea of statistical convergence for sequences of real numbers, which are defined over a Banach space via the ...
Bidu Bhusan Jena , Susanta Kumar Paikray
doaj   +1 more source

Approximation by Shifts of Compositions of Dirichlet L-Functions with the Gram Function

open access: yesMathematics, 2020
In this paper, a joint approximation of analytic functions by shifts of Dirichlet L-functions L ( s + i a 1 t τ , χ 1 ) , … , L ( s + i a r t τ , χ r ) , where a 1 , … , a r are non-zero real algebraic numbers linearly ...
Artūras Dubickas   +2 more
doaj   +1 more source

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