Metric spaces Manhattan distance Ultrametric space P-adic numbers, p-adic analysis Uniform continuity Lipschitz continuity Uniform space Pointwise convergence Metrization theorems Complete space Cauchy sequence Banach fixed point theorem Baire category theorem Nowhere dense Baire space Banach-Mazur game Co-meagre Polish space Topological spaces: basic terms Open set Closed set Closure (mathematics) Clopen set Dense (topology) Limit point Separable Boundary G-delta set Germ (mathematics) Atlas (topology Topological spaces: examples Discrete space Locally constant function Connected space Trivial topology Finer topology Product topology Restricted product Quotient space Unit interval Extended real number line Long line Cantor set, Cantor space Space-filling curve Topologist's sine curve Uniform norm Hilbert cube Lower limit topology Real tree Zariski topology Kuratowski closure axioms Unicoherent Compact spaces Finite intersection property Compactification Tychonoff's theorem Locally compact space Measure of non-compactness Separation axioms T0 space T1 space Hausdorff space Regular space Tychonoff space Normal space Urysohn's lemma Tietze extension theorem Paracompact Separated sets Countability Second countable Lindelöf space Net (mathematics) Ultrafilter Descriptive set theory Topological algebra Topological group Topological ring Topological vector space Properly discontinuous Stone's duality Sheaf space Combinatorial topology Polytope Simplex Simplicial complex CW complex Manifold Triangulation
Topological algebra Topological group Topological ring Topological vector space Properly discontinuous Stone's duality Sheaf space Combinatorial topology Polytope Simplex Simplicial complex CW complex Manifold Triangulation