List questions from euler-lagrange-equation

Published on 26 Mar 2026 - 14:18

41

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Problem with a result about Viscosity Solutions of the Euler-Lagrange PDE

Published on 23 Feb 2026 - 4:19

117

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Deduce Geodesics equation from Euler equations

Published on 24 Jul 2017 - 2:43

241

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QFT, action, EoM, mass of particle, on-shell

Published on 26 Mar 2026 - 14:19

200

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Holonomic constraint forces using Lagrange multipliers

Published on 23 Feb 2026 - 10:14

36

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Math incomprehension $\dfrac{\partial T}{\partial\dot{q}^{\lambda}}=g_{\lambda\mu}\dot{q^{\mu}}+g_{o \lambda}$

Published on 06 Aug 2017 - 12:01

114

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Derivation of Euler-Lagrange equation: locally stationary in what sense?

Published on 11 Aug 2017 - 12:13

95

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Lorentz-invariance Lagrangian for a free particle and $\frac{d}{d \tau} \left( m \eta_{\mu \nu} u^{\mu}\right)=0$

Published on 23 Feb 2026 - 10:06

143

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Understanding the Lemma 2 of Calculus of Variations

Published on 21 Aug 2017 - 4:18

662

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Calculus of Variation: Trouble finding the Euler-Lagrange equation

Published on 21 Aug 2017 - 11:29

482

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Hamiltonian from Lagrangian $L= \frac{m}{2}(\dot{r}^2+r^2\dot{\theta^2})+ \frac{k\cos(\theta)}{r^2}$

Published on 25 Mar 2026 - 13:57

984

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Am I solving Dido's isoperimetric (variational) problem correctly?

Published on 30 Aug 2017 - 17:28

2.5k

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What am I doing wrong with this catenary (variational) problem? (Euler-Lagrange Equation)

Published on 30 Aug 2017 - 18:28

521

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Is the Hamiltonian just a mnemonic for the Lagrangian?

Published on 25 Mar 2026 - 19:06

340

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Calculus of variations, Euler Lagrange problem

Published on 05 Sep 2017 - 7:53

List Question

Invariance of Euler-Lagrange equation

Problem with a result about Viscosity Solutions of the Euler-Lagrange PDE

Deduce Geodesics equation from Euler equations

QFT, action, EoM, mass of particle, on-shell

Holonomic constraint forces using Lagrange multipliers

Math incomprehension $\dfrac{\partial T}{\partial\dot{q}^{\lambda}}=g_{\lambda\mu}\dot{q^{\mu}}+g_{o \lambda}$

Derivation of Euler-Lagrange equation: locally stationary in what sense?

Lorentz-invariance Lagrangian for a free particle and $\frac{d}{d \tau} \left( m \eta_{\mu \nu} u^{\mu}\right)=0$

Understanding the Lemma 2 of Calculus of Variations

Calculus of Variation: Trouble finding the Euler-Lagrange equation

Hamiltonian from Lagrangian $L= \frac{m}{2}(\dot{r}^2+r^2\dot{\theta^2})+ \frac{k\cos(\theta)}{r^2}$

Am I solving Dido's isoperimetric (variational) problem correctly?

What am I doing wrong with this catenary (variational) problem? (Euler-Lagrange Equation)

Is the Hamiltonian just a mnemonic for the Lagrangian?

Calculus of variations, Euler Lagrange problem

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