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def definition def or abbrev

cubicDeficit

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formal statement (Lean)

 115def cubicDeficit {n : ℕ} (L : EdgeLengthField n) (h : HingeDatum n) : ℝ :=

proof body

Definition body.

 116  match h.edges with
 117  | [(i, j)] => (recoverEps L i - recoverEps L j) ^ 2
 118  | _ => 0
 119
 120/-- Area at a hinge: if the hinge carries a single edge `(i, j)`,
 121    return `(κ/2) · (h.weight (i, j))`; otherwise return 0. -/

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