OAI/Geometry/SurfaceImmersion/Whitney/RegularDoubleLocusImmersion.lean

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1 declarations, 0 contain sorry, 0 declared as axioms

Both source projections, and the common image curve, are immersions at any double pair consisting of two regular surface points.

  1. theorem OAI.ClosedSurfaceR4.FiniteOrderSmoothing.doubleLocus_regular_projections line 16