Results 41 to 50 of about 4,343 (301)

Sector operator inequalities involving positive linear maps

Journal of Inequalities and Applications
In this note, we prove the pth power ( p ≥ 2 $p\geq 2$ ) of two new sector operator inequalities for positive linear maps which are due to Bedrani et al. (Positivity 25:1601-1629, 2021) and Nasiri (Filomat 38:3429-3438, 2024), respectively.
Jiqin Chen, Xiaohui Fu, Qi Song, Chuchu Tang   +3 more
doaj   +1 more source

Analytic Normalized Solutions of 2D Fractional Saint-Venant Equations of a Complex Variable

Journal of Function Spaces, 2021
Saint-Venant equations describe the flow below a pressure surface in a fluid. We aim to generalize this class of equations using fractional calculus of a complex variable.
Najla M. Alarifi, Rabha W. Ibrahim
doaj   +1 more source

On Multivalent Analytic Functions Considered by a Multi-Arbitrary Differential Operator in a Complex Domain

Axioms, 2021
(1) Background: There is an increasing amount of information in complex domains, which necessitates the development of various kinds of operators, such as differential, integral, and linear convolution operators.
Najla M. Alarifi, Rabha W. Ibrahim
doaj   +1 more source

Diversity and complexity in neural organoids

FEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

More power vector bounds for operator pairs in Hilbert spaces with applications

Journal of Inequalities and Applications
This paper investigates power vector inequalities for bounded linear operator pairs ( B , C ) $(B,C)$ in a Hilbert space H $\mathcal{H}$ . By leveraging vector inequalities derived by the second author for inner products and norms, we establish various ...
Najla Altwaijry, Silvestru Sever Dragomir, Kais Feki   +2 more
doaj   +1 more source

Bargmann-Type Inequality for Half-Linear Differential Operators

Journal of Inequalities and Applications, 2009
By means of the Riccati technique, the authors obtain a Bargmann-type necessary condition for the existence of a nontrivial solution of the following perturbed half-linear Euler differential equation with at least \((n+1)\) zero points in \((0,\infty )\): \[ (\Phi(x^{\prime}))^{\prime}+[\gamma/t^{p}+c(t)]\Phi(x)=0, \] where \(\Phi (x):=|x|^{p - 2}x, p ...
Ondřej Došlý, Gabriella Bognár   +1 more
openaire   +3 more sources

Adaptive Observer for Coupled Wave PDE and Infinite ODE With Sampled Data and Unknown Input: Application to Brain Hemodynamics Estimation

International Journal of Adaptive Control and Signal Processing, EarlyView.
This article proposes a convergent adaptive observer for a damped wave PDE and an infinite‐dimensional ODE coupled in cascade using sampled‐in‐space ODE state measurements. The proposed observer estimates the distributed states of the PDE and ODE along with unknown PDE parameters and spatial input.
Zehor Belkhatir, Sarah Mechhoud, Taous‐Meriem Laleg‐Kirati   +2 more
wiley   +1 more source

Reverse Inequalities for the Numerical Radius of Linear Operators in Hilbert Spaces

, 2005
Some elementary inequalities providing upper bounds for the difference of the norm and the numerical radius of a bounded linear operator on Hilbert spaces under appropriate conditions are ...
Sever S. Dragomir, Dragomir, Sever S
core   +1 more source

Some Inequalities for Certain p-Valent Functions Connected with the Combination Binomial Series and Confluent Hypergeometric Function

Axioms, 2022
The present paper deals with a new differential operator denoted by Fp,tδ,n,b,c,m,β, whose certain properties are deduced by using well-known earlier studies regarding differential inequalities and the Caratheodory function.
Sheza M. El-Deeb, Adriana Cătaş
doaj   +1 more source

Multiobjective Codesign Optimization of a Planar Pneumatic Artificial Muscle‐Based Snake‐Like Robot for Enhanced Agility and Energy Efficiency

Advanced Robotics Research, EarlyView.
A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
wiley   +1 more source