OAI/Geometry/EinsteinFour/OrientationCoverSmoothLift.lean

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2 declarations, 0 contain sorry, 0 declared as axioms

A continuous lift through the orientation cover inherits smoothness from its projection, because its local chart is exactly the base chart.

  1. theorem OAI.PositiveEinsteinFour.Geometry.contMDiffAt_orientationCover_lift line 22
  2. theorem OAI.PositiveEinsteinFour.Geometry.contMDiff_orientationCover_lift line 38