Homology theory MATHEMATICS 13 Topology 8 Homotopy theory 7 Geometry, Algebraic 5 Group theory 5 Geometry 4 Algebra 3 Algebraic 3 Categories (Mathematics) 3 Differential topology 3 Quantum theory 3 Sheaf theory 3 Algebraic number theory 2 Algebraic topology 2 Algebraic varieties 2 Arithmetic 2 Complexes 2 Curvature 2 Differential equations, Partial 2 Fiber bundles (Mathematics) 2 Finite groups 2 Geometry, Differential 2 Group Theory 2 Homologie 2 Influence 2 Intermediate 2 Lie algebras 2 Lie groups 2 Modules (Algebra) 2