Geometry, Algebraic Homology theory 9 Categories (Mathematics) 5 Algebra, Homological 4 Associative algebras 3 Commutative algebra 3 Functions of complex variables 3 K-theory 3 Moduli theory 3 Singularities (Mathematics) 3 Abelian varieties 2 Algebraic topology 2 Associative rings 2 Commutative rings 2 Functions of several complex variables 2 Geometry, Differential 2 Group theory 2 Hodge theory 2 Invariants 2 Lie algebras 2 Linear algebraic groups 2 Logic, Symbolic and mathematical 2 Modules (Algebra) 2 Rings (Algebra) 2 Schemes (Algebraic geometry) 2 Toposes 2 Abelian categories 1 Algebraic fields 1 Algebraic number theory 1 Algebraic spaces 1