Results 61 to 70 of about 5,484,622 (180)

Zeros of derivative of Lerch's zeta-function

open access: yesAdvanced Studies in Pure Mathematics, 2020
In this paper, we study the distribution of the zeros of the derivative of the Lerch zeta-function. We indicate the zero-free regions and the positions of the trivial zeros. Also, we consider an asymptotic formula for the number of nontrivial zeros and show that almost all nontrivial zeros are arbitrarily close to the critical line.
Garunkštis, Ramūnas   +2 more
openaire   +2 more sources

Mobility patterns in Austrian and Italian municipalities in the decade before and during the COVID‐19 era

open access: yesPopulation, Space and Place, Volume 31, Issue 1, January 2025.
Abstract In European countries, where the demographic transition has reached advanced stages and the natural increase has fallen below zero, migration constitutes a significant component of local population change. We investigate to what extent the dynamics of international migration and internal mobility changed during the first waves of the COVID‐19 ...
Daniela Ghio, Anne Goujon, Claudio Bosco
wiley   +1 more source

Designing a Resilient Controller for Cancer Immunotherapy: Application to a Fractional‐Order Tumour‐Immune Model

open access: yesIET Systems Biology, Volume 19, Issue 1, January/December 2025.
In this paper, we propose a robust control method for the automatic treatment of targeted anti‐angiogenic molecular therapy based on multi‐input multi‐output (MIMO) nonlinear fractional and non‐fractional models using the backstepping (BS) approach.
Mohamadreza Homayounzade   +1 more
wiley   +1 more source

Limiting Values and Functional and Difference Equations

open access: yesMathematics, 2020
Boundary behavior of a given important function or its limit values are essential in the whole spectrum of mathematics and science. We consider some tractable cases of limit values in which either a difference of two ingredients or a difference equation ...
N.-L. Wang   +2 more
doaj   +1 more source

UEG Week 2025 Poster Presentations [PDF]

open access: yesUnited European Gastroenterol J
United European Gastroenterology Journal, Volume 13, Issue S8, Page S803-S1476, October 2025.
europepmc   +2 more sources

Hankel and Toeplitz Determinants for q‐Starlike Functions Involving a q‐Analog Integral Operator and q‐Exponential Function

open access: yesJournal of Function Spaces, Volume 2025, Issue 1, 2025.
This article investigates the upper bounds of the second Hankel and Toeplitz determinants for a family of q‐starlike functions defined by a q‐analog integral operator, which is a more general form of the q‐Srivastava‐Attiya operator, and the q‐exponential function eq(z).
Sarem H. Hadi   +3 more
wiley   +1 more source

Another discrete Fourier transform pairs associated with the Lipschitz-Lerch zeta function

open access: yes, 2012
It is demonstrated that the alternating Lipschitz-Lerch zeta function and the alternating Hurwitz zeta function constitute a discrete Fourier transform pair.
Cvijović, Đurđe
core   +1 more source

On the taylor expansion of the Lerch zeta-function

open access: yesJournal of Mathematical Analysis and Applications, 1992
The Lerch zeta function is the analytic continuation in the complex \(s\) plane of the series \[ L(x,a,s)=\sum_{n\geq 0}\exp\{2\pi inx\}(n+a)^{- s}, \] where \(x\) and \(a\) are real parameters. Properties of this function are deduced from its Taylor expansion in the parameter \(a\).
openaire   +2 more sources

Arithmetic progressions and holomorphic phase retrieval

open access: yesBulletin of the London Mathematical Society, Volume 56, Issue 11, Page 3316-3330, November 2024.
Abstract We study the determination of a holomorphic function from its absolute value. Given a parameter θ∈R$\theta \in \mathbb {R}$, we derive the following characterization of uniqueness in terms of rigidity of a set Λ⊆R$\Lambda \subseteq \mathbb {R}$: if F$\mathcal {F}$ is a vector space of entire functions containing all exponentials eξz,ξ∈C∖{0}$e^{
Lukas Liehr
wiley   +1 more source

Lead‐time‐continuous statistical postprocessing of ensemble weather forecasts

open access: yesQuarterly Journal of the Royal Meteorological Society, Volume 150, Issue 761, Page 2147-2167, April 2024 Part B.
Statistical postprocessing methods for recalibrating forecasts are usually fitted individually for each lead time at which a forecast is available. This, however, is computationally expensive and restricts the usability of models. Here we study the lead‐time dependence of Ensemble Model Output Statistics—a postprocessing method—and develop lead‐time ...
Jakob Benjamin Wessel   +2 more
wiley   +1 more source

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