def
definition
def or abbrev
L_density
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formal statement (Lean)
69noncomputable def L_density (_g : Metric) (_ψ : RefreshField) (p : ILGParams) : ℝ :=
proof body
Definition body.
70 (p.alpha ^ 2) / 2 - (p.cLag ^ 2) / 2 + p.cLag * p.alpha
71
72/-- Covariant scalar Lagrangian pieces (symbolic). -/