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2 votes
1 answer
159 views

Inverse problem of the calculus of variations for autonomous second-order ODEs

Consider the following particular case of the inverse problem of the calculus of variations: given a system of second-order equations $$ \ddot{q}^i = f^i(q, \dot{q}, t), \quad i = 1, \dots, n, \label{...
A. J. Pan-Collantes's user avatar
1 vote
0 answers
61 views

How can we calculate the Euler-lagrange equations?

In this paper https://arxiv.org/pdf/1907.09605.pdf \ let $\Omega \subset \mathbb{R}^n$ with $n \geq 1$ be a bounded Lipschitz domain with boundary $\partial \Omega$, $f: \Omega \rightarrow \mathbb{R}$ ...
Mohamed's user avatar
  • 11
5 votes
0 answers
137 views

Functional inverse problem based on a variational principle

I am trying to solve an inverse problem based on variational principle. I will first present a forward problem that is already solved, and then present the inverse problem that I am trying currently ...
can't stop me now's user avatar
15 votes
1 answer
1k views

Is $\delta(df \wedge df)=0$ an Euler-Lagrange equation?

$\newcommand{\id}{\operatorname{Id}}$ $\newcommand{\TM}{\operatorname{TM}}$ $\newcommand{\Hom}{\operatorname{Hom}}$ $\newcommand{\M}{\mathcal{M}}$ $\newcommand{\N}{\mathcal{N}}$ $\newcommand{\tr}{\...
Asaf Shachar's user avatar
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