OAI/Analysis/CircleDomains/Sobolev/ExteriorAreaBoundProof.lean

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Discharge of the omitted-area form of the exterior area theorem. The proof uses Green and Schoenflies, exact annular energy, and the principal signed-area limit.

  1. lemma OAI.CircleDomainRigidity.exterior_circle_area_le line 15
  2. lemma OAI.CircleDomainRigidity.exteriorOmittedAreaTheorem line 39