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def definition def or abbrev

IsDivergenceFreeTraj

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formal statement (Lean)

 135def IsDivergenceFreeTraj (u : ℝ → FourierState2D) : Prop :=

proof body

Definition body.

 136  ∀ t : ℝ, ∀ k : Mode2, divConstraint k ((u t) k) = 0
 137

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