List questions from euler-lagrange-equation

Published on 16 Nov 2022 - 18:16

103

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How is $\nabla (u\cdot A) =u\cdot \nabla A+ u\times (\nabla \times A) $?

Published on 18 Nov 2022 - 3:57

50

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Finding extremal for changing boundary conditions

Published on 24 Nov 2022 - 10:10

94

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Given $\delta{S} = \left( p\,\delta{q} \right)_{\alpha = 0},$ prove that $ \frac{\partial S}{\partial q} = p.$

Published on 30 Nov 2022 - 21:47

246

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Limitation of Lagrange Multipliers

Published on 01 Dec 2022 - 20:29

102

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Solving $\min\int_{0}^{1} \left( x^2 + 2tx + tx\dot{x} + \dot{x}^2 \right) {\rm d} t$ with $x(0)=0$ and $x(1)=1$

Published on 05 Dec 2022 - 13:08

111

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What is the derivative of function respective to it's integral?

Published on 07 Dec 2022 - 16:02

67

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Can the tangent and cotangent bundles have the same coordinates? Symplectic form in cotangent coordinates

Published on 25 Mar 2026 - 20:19

322

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Can you find $y$ minimizing $|\int_a^b y|$?

Published on 16 Dec 2022 - 18:28

36

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Property of a function equivalent to being the solution of a Variational method?

Published on 24 Feb 2026 - 17:13

42

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gradient descent relaxation dynamics of a Euler-Lagrange equation

Published on 01 Jan 2023 - 10:38

69

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Euler Lagrange equation $-u''=f(u)$

Published on 09 Jan 2023 - 12:08

137

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Find function subject to constraints using Fast Fourier Transform (FFT)

Published on 09 Jan 2023 - 22:46

332

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Euler-Lagrange with derivative of multipliers

Published on 10 Jan 2023 - 12:39

156

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Arriving at the energy functional of the nonlinear Poisson equation

Published on 24 Feb 2026 - 10:17

List Question

Help with Deriving the Euler-Lagrange equation(Possible misunderstanding Leibniz integral rule)

How is $\nabla (u\cdot A) =u\cdot \nabla A+ u\times (\nabla \times A) $?

Finding extremal for changing boundary conditions

Given $\delta{S} = \left( p\,\delta{q} \right)_{\alpha = 0},$ prove that $ \frac{\partial S}{\partial q} = p.$

Limitation of Lagrange Multipliers

Solving $\min\int_{0}^{1} \left( x^2 + 2tx + tx\dot{x} + \dot{x}^2 \right) {\rm d} t$ with $x(0)=0$ and $x(1)=1$

What is the derivative of function respective to it's integral?

Can the tangent and cotangent bundles have the same coordinates? Symplectic form in cotangent coordinates

Can you find $y$ minimizing $|\int_a^b y|$?

Property of a function equivalent to being the solution of a Variational method?

gradient descent relaxation dynamics of a Euler-Lagrange equation

Euler Lagrange equation $-u''=f(u)$

Find function subject to constraints using Fast Fourier Transform (FFT)

Euler-Lagrange with derivative of multipliers

Arriving at the energy functional of the nonlinear Poisson equation

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