∫ Утверждение Mathlib
boundary_eq_empty
Mathlib.Geometry.Manifold.IsManifold.InteriorBoundary
URI: https://scilib.ai/kg/mathlib#ModelWithCorners.Boundaryless.boundary_eq_empty
∫ Утверждение Mathlib
Mathlib.Geometry.Manifold.IsManifold.InteriorBoundary
URI: https://scilib.ai/kg/mathlib#ModelWithCorners.Boundaryless.boundary_eq_empty