Results 131 to 140 of about 32,160 (207)

Positive solutions of discrete boundary value problems with the (p,q)-Laplacian operator

Electronic Journal of Differential Equations, 2017
We consider a discrete Dirichlet boundary value problem of equations with the (p,q)-Laplacian operator in the principal part and prove the existence of at least two positive solutions.
Antonella Nastasi, Calogero Vetro, Francesca Vetro   +2 more
doaj  

Euler–Lagrange equations for the spectral element shallow water system, Ocean Model

, 2020
We present the derivation of the discrete Euler-Lagrange equations for an inverse spectral element ocean model based on the shallow water equations. We show that the discrete Euler-Lagrange equations can be obtained from the continuous Euler-Lagrange ...
J C Levin, A F Bennett, D B Haidvogel, B Chua, M Iskandarani   +4 more
core  

Euler- Lagrange Equation for Fractional Variational Problems

, 2017
This thesis introduces three new operators and presents some of their properties. It defines a new class of variational problems in terms of these operators and derives Euler-Lagrange equations for this class of problems.
Diriba, Hailu Daba
core  

Newton's method in the context of gradients

Electronic Journal of Differential Equations, 2007
This paper gives a common theoretical treatment for gradient and Newton type methods for general classes of problems. First, for Euler-Lagrange equations Newton's method is characterized as an (asymptotically) optimal variable steepest descent method ...
John W. Neuberger, Janos Karatson
doaj  

Exterior Differential Systems and Euler-Lagrange Partial Differential Equations

, 2016
We use methods from exterior differential systems (EDS) to develop a geometric theory of scalar, first-order Lagrangian functionals and their associated Euler-Lagrange PDEs, subject to contact transformations.
Grossman, Daniel, Griffiths, Phillip, Bryant, Robert   +2 more
core  

Lagrangian multiforms and dispersionless integrable systems. [PDF]

Lett Math Phys
Ferapontov EV, Vermeeren M.
europepmc   +1 more source

Fast Numerical Solvers for Parameter Identification Problems in Mathematical Biology. [PDF]

J Sci Comput
Benková K, Pearson JW, Ptashnyk M.
europepmc   +1 more source

Robust observer-sliding mode composite control for mechanical systems under uncertain disturbances. [PDF]

Sci Rep
Li Q, Hu Y, Fang X.
europepmc   +1 more source

Kinematic modeling and simulation of dual-sided shaper machine using Newton-Euler and Lagrangian approaches. [PDF]

Sci Rep
Gutata GR, Kebede GA, Abbera GH.
europepmc   +1 more source

Robust and intelligent control strategies for a 3-DOF robotic arm: a comparative study. [PDF]

Sci Rep
Esmail EE, El-Khatib MF, Agwa MA.
europepmc   +1 more source