OAI/Analysis/CircleDomains/Topology/HomeomorphRoundDiskImage.lean

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1 declarations, 0 contain sorry, 0 declared as axioms

A plane homeomorphism carrying one boundary circle onto another carries its bounded closed disk onto the corresponding bounded closed disk.

  1. lemma OAI.CircleDomainRigidity.homeomorph_image_closedBall_of_sphere line 11