New posts in Variational Calculus

Why is the shape of a hanging chain not a "V"?

Derivative of the electromagnetic tensor invariant $F_{\mu\nu}F^{\mu\nu}$

The dynamical variables in Lagrangian formalism

How to calculate second-order variations of an action?

Is the shorthand $ \partial_{\mu} $ strictly a partial derivative in field theory?

Variation of Maxwell action with respect to the vierbein - Einstein-Cartan Theory

Is the Lagrangian density a functional or a function?

Do circular wheels maximize mechanical efficiency?

Derivation of Euler-Lagrange equation from principle of least action

Variation of the metric with respect to the metric