an empty vine
Sche tok him thanne a maner glu, / The which was of so great vertu, / That where a man it wolde caste, / It scholde bind anon so faste / That noman mihte it don aweie.
Schomberg turned up, yawning affectedly, almost before Davidson had regained his seat.
In the language of differential geometry, the incompressible inviscid Euler equations can be written in vorticity-vector potential form as ∂ₜ𝜔+ℒᵤ𝜔=0\u=𝛿̃𝜂⁻¹𝛥⁻¹𝜔 where 𝜔 is the vorticity 2-form, ℒᵤ denotes the Lie derivative with respect to the velocity field u, 𝛥 is the Hodge Laplacian, 𝛿 is the codifferential (the negative of the divergence operator), and ̃𝜂⁻¹ is the canonical map from 2-forms to 2-vector fields induced by the Euclidean metric 𝜂.
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