Results 31 to 40 of about 4,851,792 (234)

Variational problems with fractional derivatives: Euler–Lagrange equations [PDF]

open access: yes, 2008
We generalize the fractional variational problem by allowing the possibility that the lower bound in the fractional derivative does not coincide with the lower bound of the integral that is minimized.
T. Atanacković, S. Konjik, S. Pilipovic
semanticscholar   +1 more source

Estimating Euler equations [PDF]

open access: yes, 2002
In this paper we consider conditions under which the estimation of a log-linearized Euler equation for consumption yields consistent estimates of preference parameters.
Attanasio, O.P.   +5 more
core   +1 more source

Numerical Solution of Differential Equations of Elastic Curves in 3-dimensional Anti-de Sitter Space [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2023
In this paper, we aim to extend the Darboux frame field into 3-dimensional Anti-de Sitter space and obtain two cases for this extension by considering a parameterized curve on a hypersurface; then we carry out the Euler-Lagrange equations and derive ...
Samira Latifi   +2 more
doaj   +1 more source

On the variational principle in the unfolded dynamics

open access: yesPhysics Letters B, 2022
The interplay between off-shell and on-shell unfolded systems is analyzed. The formulation of invariant constraints that put an off-shell system on shell is developed by adding new variables and derivation in the target space, that extends the original Q-
A.A. Tarusov, M.A. Vasiliev
doaj   +1 more source

Higher Order Hamiltonian Systems with Generalized Legendre Transformation

open access: yesMathematics, 2018
The aim of this paper is to report some recent results regarding second order Lagrangians corresponding to 2nd and 3rd order Euler–Lagrange forms. The associated 3rd order Hamiltonian systems are found.
Dana Smetanová
doaj   +1 more source

Partial Lagrangian for Efficient Extension and Reconstruction of Multi-DoF Systems and Efficient Analysis Using Automatic Differentiation

open access: yesRobotics, 2022
In the fields of control engineering and robotics, either the Lagrange or Newton–Euler method is generally used to analyze and design systems using equations of motion.
Takashi Kusaka, Takayuki Tanaka
doaj   +1 more source

A direct method for solving fractional order variational problems by hat basis functions

open access: yesAin Shams Engineering Journal, 2018
This paper presents a numerical technique for solving a class of fractional variational problems using a direct method based on operational matrix of generalized hat basis function. The fractional derivative is defined in the Caputo sense.Minimization of
Osama H. Mohammed
doaj   +1 more source

On the structure of minimizers of causal variational principles in the non-compact and equivariant settings [PDF]

open access: yes, 2012
We derive the Euler-Lagrange equations for minimizers of causal variational principles in the non-compact setting with constraints, possibly prescribing symmetries.
Finster, Felix, Bernard, Yann
core   +1 more source

An electrical interpretation of mechanical systems via the pseudo-inductor in the Brayton-Moser equations [PDF]

open access: yes, 2005
In this paper an analogy between mechanical and electrical systems is presented, where, in contrast to the traditional analogy, position dependence of the mass inertia matrix is allowed. In order to interpret the mechanical system in an electrical manner,
Rinaldis, Alessandro de,   +3 more
core   +2 more sources

The Lie group Euler methods of multibody system dynamics with holonomic constraints

open access: yesAdvances in Mechanical Engineering, 2018
The Euler methods on Lie group are developed for the differential–algebraic equations of multibody system dynamics with holonomic constraints. The implicit Euler method is used to solve the differential–algebraic equations as Euler–Lagrange equations on ...
Jieyu Ding, Zhenkuan Pan
doaj   +1 more source

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