Results 41 to 50 of about 118 (104)

Joint approximation of analytic functions by shifts of the Riemann and periodic Hurwitz zeta-functions

Applicable Analysis and Discrete Mathematics, 2018
We present some new results on the simultaneous approximation with given accuracy, uniformly on compact subsets of the critical strip, of a collection of analytic functions by discrete shifts of the Riemann and periodic Hurwitz zeta-functions. We prove that the set of such shifts has a positive lower density.
Laurincikas, Antanas, Macaitiene, Renata
openaire   +2 more sources

The Effects of Fluctuating Carrying Capacity on the Dynamics of a Holling‐Type III Predator–Prey Model

Journal of Mathematics, Volume 2026, Issue 1, 2026.
This study investigates the complex dynamics of a predator–prey system governed by the classical Lotka–Volterra model incorporating a Holling‐type III. To capture environmental variability, the prey’s carrying capacity is modeled as a periodic function, introducing a time‐dependent forcing into the system.
Ali Sarrah, Faizah J. Alanazi, Mehmet Yavuz, Sayed Saber, Mengxin Chen   +4 more
wiley   +1 more source

A Spatiotemporal Dynamics and Stability Analysis of Remote Healthcare System Adoption in Remote Hill‐Track Areas

Journal of Mathematics, Volume 2026, Issue 1, 2026.
The persistent challenge of healthcare accessibility in geographically isolated regions necessitates innovative approaches to healthcare delivery and adoption modeling. This study introduces a novel mathematical framework based on reaction‐diffusion systems to analyze the spatiotemporal dynamics of remote healthcare system (RHS) adoption in remote hill‐
Iqbal M. Batiha, Shaher Momani, Nor Hidayati Abdul Aziz, Nur Asyiqin Amir Hamzah, Khair Razlan Othman, Amani Sheimat, Nan-Jing Huang   +6 more
wiley   +1 more source

Modeling Prey–Predator Populations With Noise Following the Extended Gaussian Distribution

Journal of Probability and Statistics, Volume 2026, Issue 1, 2026.
This study examines how tourism influences the ecological balance of a protected natural park where two interacting wildlife species follow Lotka–Volterra‐type prey–predator dynamics. Tourists’ decisions to visit the park depend on environmental fluctuations, species visibility, and time‐varying preferences toward prey and predator populations.
Kumlachew Wubale Tesfaw, Ayele Taye Goshu, Tsegaye Simon Lachamo, Marek T. Malinowski   +3 more
wiley   +1 more source

Numerical Stability of Soil‐Water Coupled Analysis With Implicit Time Integration Using Spectral Radius of Recursive Equation Comprising Discretized Governing Equation of u‐p Formulation

International Journal for Numerical Methods in Engineering, Volume 126, Issue 21, 15 November 2025.
ABSTRACT The numerical stability of the u‐p formulation‐based dynamic soil‐water coupled analysis was evaluated using the spectral radius of a simultaneous recursive equation derived from the spatiotemporally discretized governing equations and time‐integration formulas.
Tomohiro Toyoda, Toshihiro Noda
wiley   +1 more source

Self‐Potential Signal Associated With Hydrothermal System Disrupted by Extreme Raining Events; The Case Study of Formica Leo, Piton de la Fournaise, La Réunion Island

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract The scoria cones called Formica Leo located at the base of the Piton de la Fournaise terminal cone have been chosen for its significant positive Self‐Potential (SP) anomalies associated with hydrothermal uprising fluids to monitor SP signal and study its dynamics in relation with huge and extreme rainfall events.
Emilie Roulleau, Anthony Finizola, Nicolas Vinet, Romain Biennais, Mazhar Meralli Ballou, Amélie Poullot, Céline D'Angelo, Clément Grace, Emma Chaudron Vrignaud, Rachel Gusset, Killian Mussard, Jehoji Kuzamba Ethu, Elisa‐Lou Reati   +12 more
wiley   +1 more source

A generalized limit theorem for the periodic Hurwitz zeta-function

Chebyshevskii sbornik, 2019
The paper deals with the periodic Hurwitz zeta function \(\zeta (s,a,\{ a_{n} \} )=\sum _{n=0}^{\infty }\frac{a_{n} }{(n+a)^{s} } \), \(a>0,\; Res>1\), where \(\{ a_{n} \} \)is a periodic sequence. The author proves a generalized limit theorem for this function.
openaire   +3 more sources

Fractional Gaussian Noise: Spectral Density and Estimation Methods

Journal of Time Series Analysis, Volume 46, Issue 6, Page 1146-1174, November 2025.
The fractional Brownian motion (fBm) process, governed by a fractional parameter H∈(0,1)$$ H\in \left(0,1\right) $$, is a continuous‐time Gaussian process with its increment being the fractional Gaussian noise (fGn). This article first provides a computationally feasible expression for the spectral density of fGn.
Shuping Shi, Jun Yu, Chen Zhang
wiley   +1 more source

Asymptotic Analysis of Regular Sequences. [PDF]

Algorithmica, 2020
Heuberger C, Krenn D.
europepmc   +1 more source

The mixed joint functional independence of the Riemann zeta-and periodic Hurwitz zeta-functions

Чебышевский сборник, 2016
The functional independence of zeta-functions is an interesting nowadays problem. This problem comes back to D. Hilbert. In 1900, at the International Congress of Mathematicians in Paris, he conjectured that the Riemman zeta-function does not satisfy any algebraic-differential equation. This conjecture was solved by A. Ostrowski. In 1975, S.M.
KAˇCINSKAIT˙E ROMA, RAPIMBERGAIT˙E SANDRA   +1 more
openaire   +1 more source