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). -/