Results 91 to 100 of about 2,336 (201)
New Applications of a Kind of Infinitesimal-Operator Lie Algebra
Advances in Mathematical Physics, 2016 Applying some reduced Lie algebras of Lie symmetry operators of a Lie transformation group, we obtain an invariant of a second-order differential equation which can be generated by a Euler-Lagrange formulism.
Honwah Tam, Yufeng Zhang, Xiangzhi Zhang
doaj +1 more source
A Semi‐Resolved VOF‐DEM Coupling Method for Bedload Transport of Non‐Spherical Particles
Water Resources Research, Volume 62, Issue 8, August 2026.Abstract Bedload transport of coarse sediments involves complex particle‐flow interactions that govern sediment motion and bed surface evolution. In this study, a semi‐resolved CFD‐DEM method is developed to simulate bedload sediment dynamics, in which the background fluid information for each particle is calculated using a Gaussian kernel function ...
Rangang Zhang +5 more
wiley +1 more source
Cluster scattering diagrams via quiver moduli and tight gradings
Journal of the London Mathematical Society, Volume 114, Issue 2, August 2026.Abstract We study rank‐2 cluster scattering diagrams through moduli spaces of quiver representations and a recently developed combinatorial framework of tight gradings. Combining quiver‐theoretic and combinatorial methods, we prove and extend a collection of conjectures posed by Elgin–Reading–Stella concerning the structural and enumerative properties ...
Amanda Burcroff +4 more
wiley +1 more source
Weak Solutions for a Class of Nonlocal Singular Problems Over the Nehari Manifold
Mathematical Methods in the Applied Sciences, Volume 49, Issue 11, Page 12360-12378, 30 July 2026.ABSTRACT In this paper, we consider a nonlocal model of dilatant non‐Newtonian fluid with a Dirichlet boundary condition. By using the Nehari manifold and fibering map methods, we obtain the existence of at least two weak solutions, with sign information.
Zhenfeng Zhang +2 more
wiley +1 more source
ActuatorsThe fixed-time trajectory tracking control problem of the uncertain nonlinear Euler–Lagrange system is studied. To ensure the fast, high-precision trajectory tracking performance of this system, a non-singular terminal sliding-mode controller based on ...
Tong Li, Tianqi Chen, Liang Sun
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.Abstract Unsustainable rates of groundwater (GW) depletion make GW management a priority. Effective GW management is hindered by the uncertainty in the predictions of aquifer models, but the increase of geodetic surface deformation data can improve aquifer characterization.
Amal Alghamdi +3 more
wiley +1 more source
Nonholonomic systems as restricted Euler-Lagrange systems
, 2010 We recall the notion of a nonholonomic system by means of an example of classical mechanics, namely the vertical rolling disk. For a general mechanical system with nonholonomic constraints, we present a Lagrangian formulation of the nonholonomic and vakonomic dynamics using the method of anholonomic frames.
Mestdag, Tom, Crampin, Michael
openaire +1 more source
Methodologies and Programming Development of Applications on Modeling, Identification and Simulation
Revista Politécnica, 2013 Resumen.- La modelación, simulación e identificación de prototipos permiten realizar predicciones acertadas del comportamiento de los sistemas, además de hallar las expresiones matemáticas tales como funciones de transferencia, ecuaciones diferenciales y
Patricio Burbano +2 more
doaj
Physics OpenThis study presents a comprehensive analysis and modeling framework that integrates Mandelbrot's fractal scaling with fractional variational principles to advance the understanding of parameterization-invariant theories for mechanical systems.
Yazen M. Alawaideh +5 more
doaj +1 more source
Barrier Lyapunov function-based robust adaptive neural network control with dynamically adjusted activation functions for Euler-Lagrange systems under position constraints. [PDF]
Sci RepYilmaz BM.
europepmc +1 more source