Three-manifolds (Topology) 5 Topology of spaces-- Manifold topology-- Metric topology 3 Digital techniques 2 Form perception 2 Image analysis 2 Image processing 2 Mathematics 2 Shapes 2 Surfaces 2 Three-dimensional imaging 2 Algebraic topology -- Classical topics -- Degree, winding number 1 Algebraic topology -- Homology and cohomology theories -- Other homology theories 1 Differential -- Integral geometry-- Mathematics 1 Gauge fields (Physics) 1 Geometric analysis 1 Geometry, Hyperbolic 1 Group theory and generalizations -- Other generalizations of groups -- Loops, quasigroups 1 Group theory and generalizations -- Other generalizations of groups -- Sets with a single binary operation (groupoids) 1 Group theory and generalizations -- Permutation groups -- General theory for finite groups 1 Homology theory 1 Kleinian groups 1 Knot theory 1 Lecture Notes in Mathematics 1 Low-dimensional topology 1 MATHEMATICS / Geometry / General 1 Manifolds and cell complexes -- Low-dimensional topology -- Fundamental group, presentations, free differential calculus 1 Manifolds and cell complexes -- Low-dimensional topology -- Invariants of knots and 3-manifolds 1 Manifolds and cell complexes -- Low-dimensional topology -- Knots and links in $S^3$ 1 Manifolds and cell complexes -- PL-topology -- Knots and links (in high dimensions) 1 Moduli theory 1