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

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December 7

Lagrangian vs Eulerian specifications of a field

In Lagrangian and Eulerian specification of the flow field#Material derivative, 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: [1]. --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)