Example image of eyePlorer eyePlorer map for 'Dense set': Closed set Mathematics Neighbourhood (mathematics) Subset Topological space Topology Closure (topology) Interior (topology) Metric space Closure (mathematics) Baire category theorem Open set Irrational number Rational number Real number Complete metric space Countable set Nowhere dense set Separable space Continuous linear extension Goldstine theorem Partially-defined operator Polish space Resolvable space Volterra space Axiom of countability Composant Generic point Riesz's lemma Von Neumann's theorem Baire space Casorati–Weierstrass theorem Densely-defined operator Dirichlet algebra Hyperconnected space Irreducible component Van der Corput sequence Analytic semigroup Classification of discontinuities Dyadic rational Generic filter Linear flow on the torus Müntz–Szász theorem Resolvent set Unitarian trick Dante space Dual wavelet Generic property Irrational rhythm Packing dimension