Results 1 to 10 of about 99 (93)

Self-approximation of periodic Hurwitz zeta-functions

open access: yesNonlinear Analysis, 2015
Let ζ(s,ω;A) be the periodic Hurwitz zeta-function. We look for real numbers α and β for which there exist "many" real numbers τ such that the shifts ζ(s+iατ,ω;A) and ζ(s+iβτ,ω;A) are "near" each other.
Erikas Karikovas
doaj   +2 more sources

A discrete limit theorem for the periodic Hurwitz zeta-function. II

open access: yesLietuvos Matematikos Rinkinys, 2016
In the paper, we prove a limit theorem of discrete type on the weak convergence of probability measures on the complex plane for the periodic Hurwitz zeta-function.
Audronė Rimkevičienė
doaj   +5 more sources

On a Dirichlet series connected to a periodic Hurwitz zeta-function with transcendental and rational parameter

open access: yesMathematical Modelling and Analysis, 2023
In the paper, we construct an absolutely convergent Dirichlet series which in the mean is close to the periodic Hurwitz zeta-function, and has the universality property on the approximation of a wide class of analytic functions.
Aidas Balčiūnas   +2 more
doaj   +5 more sources

A weighted limit theorem for periodic Hurwitz zeta-function

open access: yesLietuvos Matematikos Rinkinys, 2012
In the paper, a weighted limit theorem for weakly convergent probability measures on the complex plane for the periodic Hurwitz zeta function is obtained.
Oleg Lukašonok
doaj   +2 more sources

On approximation of analytic functions by periodic Hurwitz zeta-functions

open access: yesMathematical Modelling and Analysis, 2019
The periodic Hurwitz zeta-function ζ(s, α; a), s = σ +it, with parameter 0 < α ≤ 1 and periodic sequence of complex numbers a = {am } is defined, for σ > 1, by series sum from m=0 to ∞ am / (m+α)s, and can be continued moromorphically to the whole ...
Violeta Franckevič   +2 more
doaj   +6 more sources

Joint universality of Dirichlet L-functions and periodic Hurwitz zeta-functions

open access: yesMathematical Modelling and Analysis, 2012
In the paper, we prove that every system of analytic functions can be approximated simultaneously uniformly on compact subsets of some region by a collection consisting of shifts of Dirichlet L-functions with pairwise non-equivalent characters and ...
Kęstutis Janulis   +3 more
doaj   +4 more sources

On the Mishou Theorem for Zeta-Functions with Periodic Coefficients

open access: yesMathematics, 2023
Let a={am} and b={bm} be two periodic sequences of complex numbers, and, additionally, a is multiplicative. In this paper, the joint approximation of a pair of analytic functions by shifts (ζnT(s+iτ;a),ζnT(s+iτ,α;b)) of absolutely convergent Dirichlet ...
Aidas Balčiūnas   +3 more
doaj   +1 more source

On the periodic Hurwitz zeta-function. [PDF]

open access: yesHardy-Ramanujan Journal, 2006
In this paper, an universality theorem in the Voronin sense for the periodic Hurwitz zeta-function is proved.
Javtokas, A., Laurinčikas, A.
openaire   +4 more sources

A JOINT UNIVERSALITY THEOREM FOR PERIODIC HURWITZ ZETA-FUNCTIONS [PDF]

open access: yesBulletin of the Australian Mathematical Society, 2008
AbstractWe prove a joint universality theorem in the Voronin sense for the periodic Hurwitz zeta-functions.
Javtokas, A., Laurinčikas, A.
openaire   +1 more source

Joint discrete approximation of a pair of analytic functions by periodic zeta-functions

open access: yesMathematical Modelling and Analysis, 2020
In the paper, the problem of simultaneous approximation of a pair of analytic functions by a pair of discrete shifts of the periodic and periodic Hurwitz zeta-function is considered. The above shifts are defined by using the sequence of imaginary parts of
Aidas Balčiūnas   +5 more
doaj   +1 more source

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