Results 51 to 60 of about 320 (178)

Mating parabolic rational maps with Hecke groups

Proceedings of the London Mathematical Society, Volume 132, Issue 3, March 2026.
Abstract We prove that any degree d$d$ rational map having a parabolic fixed point of multiplier 1 with a fully invariant and simply connected immediate basin of attraction is mateable with the Hecke group Hd+1$\mathcal {H}_{d+1}$, with the mating realised by an algebraic correspondence.
Shaun Bullett, Luna Lomonaco, Mikhail Lyubich, Sabyasachi Mukherjee   +3 more
wiley   +1 more source

Unifying Hierarchical Sliding Mode Control and Control Barrier Function for Tilt Angle Constraint of a Ball‐Balancing Robot

IET Cyber-Systems and Robotics, Volume 8, Issue 1, January/December 2026.
ABSTRACT This paper presents a novel control methodology that combines control barrier functions (CBFs) and hierarchical sliding mode control (HSMC) for the ball‐balancing robot. The motivation arises from the need to achieve stable balancing and position tracking while guaranteeing physical safety under tilt angle constraints.
Thi Thuy Hang Nguyen, Duc Cuong Vu, Minh Duc Pham, Tung Lam Nguyen, Thi‐Van‐Anh Nguyen   +4 more
wiley   +1 more source

An Adaptation Mechanism of Model Reference Adaptive System Based on Variable Structure Control for Online Parameter Estimation of IPMSM

IET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.
ABSTRACT This study introduces stator currents‐based model reference adaptive system (MRAS) estimators that employ variable structured control (VSC) in the adaptation mechanism to enable the online estimation of stator resistance and permanent magnet (PM) flux in interior permanent magnet synchronous motors (IPMSMs).
Ertugrul Ates, Burak Tekgun, Murat Barut
wiley   +1 more source

A Weighted Discrete Universality Theorem for Periodic Zeta-Functions. II

Mathematical Modelling and Analysis, 2017
In the paper, a weighted theorem on the approximation of a wide class of analytic functions by shifts ζ(s + ikαh; a), k ∈ N, 0 < α < 1, and h > 0, of the periodic zeta-function ζ(s; a) with multiplicative periodic sequence a, is obtained.
Renata Macaitienė, Mindaugas Stoncelis, Darius Šiaučiūnas   +2 more
doaj   +1 more source

Cognitive Familiarity‐Driven Rumor Diffusion: A Dynamic Compartmental Model With Stratified Susceptibility

Advances in Mathematical Physics, Volume 2026, Issue 1, 2026.
Rumor propagation significantly impacts both individual well‐being and societal stability, with various factors influencing its spread. While existing research has primarily focused on the role of interpersonal familiarity in rumor diffusion, this study introduces a different perspective: an individual’s familiarity with the subject matter itself plays
Weijun Yan, Yuhan Hu, Mengxin Chen
wiley   +1 more source

Partial Sums of the Hurwitz and Allied Functions and Their Special Values

Mathematics
We supplement the formulas for partial sums of the Hurwitz zeta-function and its derivatives, producing more integral representations and generic definitions of important constants.
Nianliang Wang, Ruiyang Li, Takako Kuzumaki   +2 more
doaj   +1 more source

A Weighted Universality Theorem for Periodic Zeta-Functions

Mathematical Modelling and Analysis, 2017
The periodic zeta-function ζ(s; a), s = σ + it is defined for σ > 1 by the Dirichlet series with periodic coefficients and is meromorphically continued to the whole complex plane.
Renata Macaitienė, Mindaugas Stoncelis, Darius Šiaučiūnas   +2 more
doaj   +1 more source

How Does Reverse‐Conformity Ambivalent Psychology Influence Rumor Spreading?

Discrete Dynamics in Nature and Society, Volume 2026, Issue 1, 2026.
In the age of social media, rumor dissemination brings serious negative impacts to society. It is important to explore the dissemination mechanism and management strategies to control rumor dissemination and reduce negative impacts. Considering the effect of reverse‐conformity ambivalent psychology on the rumor dissemination process, a novel dynamic ...
Jiaqi Zhang, Yanyuan Su, Zhengxin Yan, Yaming Zhang, Ahmed Ezzat Matouk   +4 more
wiley   +1 more source

Hyperharmonic series involving Hurwitz zeta function

Journal of Number Theory, 2010
For integers \(r\geq 1\) and \(m\geq r+1\) the authors prove that \[ \sum_{n=1}^\infty\frac{H_n^{(r)}}{n^m}=\sum_{n=1}^\infty H_n^{(r-1)}\sum_{p=0}^\infty\frac{1}{(n+p)^m}, \] where \(H_n^{(r)}\) are the hyperharmonic numbers.
Mező, István, Dil, Ayhan
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