Example image of eyePlorer eyePlorer map for 'Closure (mathematics)': Mathematics Operation (mathematics) Set (mathematics) Natural number Real number Subtraction Integer Closure (topology) Galois connection Monad Group (mathematics) Arity Operator Inverse element Subgroup Unary First-countable space Limit of a sequence Limit point Net (mathematics) Topological space Closed set Topology Interval (mathematics) Ordinal number Upper set Binary relation Predicate (mathematical logic) Generating set of a group Idempotence If and only if Kuratowski closure axioms Linear algebra Linear combination Linear span Vector space Matroid Set theory Transitive closure Abstract algebra Algebraic closure Commutative algebra Integrality Tight closure Convex hull Convex set Geometry Subset Formal language Kleene star