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def definition def or abbrev

regge_equations_statement

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formal statement (Lean)

 183def regge_equations_statement : Prop :=

proof body

Definition body.

 184  ∀ (hinges : List HingeData),
 185    ∃ (dA_dL : List ℝ),
 186      dA_dL.length = hinges.length ∧
 187      (List.zipWith (· * ·) dA_dL (hinges.map deficit_angle)).sum = 0
 188
 189/-- The Schläfli identity: the sum of A_h * d(delta_h)/dL_e vanishes
 190    identically. This is a geometric identity, not a dynamical equation. -/

depends on (14)

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