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def definition def or abbrev

divConstraint

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formal statement (Lean)

 127noncomputable def divConstraint (k : Mode2) (v : VelCoeff) : ℝ :=

proof body

Definition body.

 128  (k.1 : ℝ) * v (0 : Fin 2) + (k.2 : ℝ) * v (1 : Fin 2)
 129
 130/-- Fourier-side divergence-free predicate (modewise, at a fixed time). -/

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