Stable Normal Bundle: Differentiable Manifold, Topological PL Manifold

Topological Manifold: Mathematics, Space, Hausdorff Euclidean Manifold, Differential Structure, Differentiable Neighbourhood (Mathematics), Surface

Tubular Neighborhood: Normal Bundle, Smooth Manifold

Almost Symplectic Manifold: Differential Geometry, Differentiable Manifold, Form

Pseudoisotopy Theorem: Mathematics, Differentiable Manifold, Diffeomorphism