Geometry, Algebraic Homology theory 8 Commutative algebra 5 Algebra, Homological 4 Associative algebras 3 Categories (Mathematics) 3 Functions of complex variables 3 Moduli theory 3 Singularities (Mathematics) 3 Abelian varieties 2 Geometry, Differential 2 Hodge theory 2 Invariants 2 K-theory 2 Linear algebraic groups 2 Schemes (Algebraic geometry) 2 Abelian categories 1 Algebraic fields 1 Algebraic number theory 1 Algebraic spaces 1 Algebraic topology 1 Associative rings 1 Brauer groups 1 Coding theory 1 Commutative rings 1 Curves, Algebraic 1 Data processing 1 Dimension theory (Algebra) 1 Duality theory (Mathematics) 1 Forms, Quadratic 1