Wikipedia:Reference desk/Archives/Mathematics/2021 December 7

= December 7 =

Lagrangian vs Eulerian specifications of a field
In Lagrangian and Eulerian specification of the flow field, the specification of field F as F(x, t) is said to be a Lagrangian specification. But in what sense is this specification Lagrangian, and not Eulerian? I could be confused, but it seems like x is just physical space here. Wouldn't a Lagrangian specification be F(x0, t), where x0 is a particle label? -Amcbride (talk) 22:48, 7 December 2021 (UTC)
 * That specific word was changed not too long ago without explanation: . --Amble (talk) 17:41, 8 December 2021 (UTC)
 * Thanks. I should have checked. I'll revert. -Amcbride (talk) 18:03, 8 December 2021 (UTC)
 * Yes, I think you're right to revert it. --Amble (talk) 18:29, 8 December 2021 (UTC)