OAI/Analysis/CircleDomains/Topology/PhysicalFrontierCrossings.lean

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5 declarations, 0 contain sorry, 0 declared as axioms

A compact bounded region has a first boundary point on each coordinate line meeting its closure.

  1. def OAI.CircleDomainRigidity.planeTransverse line 13
  2. theorem OAI.CircleDomainRigidity.continuous_planeTransverse line 16
  3. theorem OAI.CircleDomainRigidity.physicalCoordinateLine_transverse line 20
  4. theorem OAI.CircleDomainRigidity.physicalCoordinateLine_of_transverse line 28
  5. theorem OAI.CircleDomainRigidity.exists_coordinate_frontier line 33