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The 61 pages that link to Metric space, each with the reason it gives.
Continuous functionNarrower topic: Distances in metric spaces make the epsilon–delta definition possible.
Uniform convergenceNarrower topic: Uniform convergence can be expressed as convergence under the supremum metric when that metric is finite.
TopologyNarrower topic: Metric spaces supply familiar distance-based examples of topological spaces.
Triangle inequalityNarrower topic: The inequality is one of the axioms that makes a distance function a metric.
Banach spaceNarrower topic: The norm turns a Banach space into a metric space where completeness is measured.
Open setNarrower topic: Distances provide a familiar way to define neighborhoods and open sets.
Absolute valueNarrower topic: Absolute difference defines the standard distance between real numbers.
Cauchy sequenceNarrower topic: The metric supplies the distances used to define a Cauchy sequence.
Topological spaceCompared with: Every metric induces a topology, but topological spaces need not have a compatible metric.
ContinuityNarrower topic: Distance-based neighborhoods extend continuity beyond real-valued functions on the real line.
Hyperbolic geometryNarrower topic: Hyperbolic geometry can be formalized by specifying distances on a space.
DistanceNarrower topic: Distance becomes a metric when it obeys these four defining rules.
Cauchy criterionNarrower topic: Distances between sequence terms give the criterion its meaning.
Fixed pointRelated: Distance lets contraction conditions and convergence to fixed points be stated precisely.
Fixed-point theoremRelated: Many fixed-point results use distances to state their assumptions.
Normed vector spaceNarrower topic: The norm produces a distance by applying it to the difference of two vectors.
IsometryNarrower topic: Isometries are defined by preserving the distance function on metric spaces.
Riemannian manifoldNarrower topic: Every Riemannian manifold induces a distance, while a metric space need not have smooth structure.
Banach fixed-point theoremNarrower topic: The theorem requires distances to define contraction and convergence.
Affine spaceCompared with: A metric supplies distances, which affine structure alone does not determine.
Lipschitz continuityNarrower topic: The Lipschitz inequality is defined using distances in the domain and codomain.
Hamming distanceNarrower topic: Hamming distance satisfies the metric axioms on strings of a fixed length.
Complete metric spaceNarrower topic: Completeness adds a condition on sequences to this underlying distance structure.
Hausdorff dimensionNarrower topic: Hausdorff dimension is defined for subsets of metric spaces, not only Euclidean figures.
Baire category theoremNarrower topic: The theorem’s standard form concerns complete metric spaces.
Supremum normRelated: A norm induces distances between functions through the norm of their difference.
Uniform continuityNarrower topic: Uniform continuity is defined using distances in the domain and codomain.
Heine–Borel theoremNarrower topic: Compactness is defined far beyond Euclidean space, where boundedness alone need not suffice.
Measure spaceCompared with: A metric measures distances between points rather than sizes of measurable subsets.
Poincaré recurrence theoremRelated: Distance lets set recurrence imply returns arbitrarily close to the starting point.
Bounded setNarrower topic: Boundedness is defined using the distance function of a metric space.
ConvergenceNarrower topic: Distances let the same convergence definition apply beyond the real numbers.
Lyapunov stabilityNarrower topic: The stability definition depends on a notion of distance between states.
Mathematical analysisNarrower topic: Metric spaces generalize distance, letting convergence and continuity extend beyond the real line.
Convergent sequenceNarrower topic: In metric spaces, distance-based convergence is equivalent to the neighborhood definition.
Mandelbrot setRelated: The complex plane’s distance and topology make boundary and connectedness meaningful.
Sequential compactnessRelated: In metric spaces, sequential compactness and compactness are equivalent.
Normal spaceCompared with: Every metric space is normal, making metric spaces a familiar stronger setting.
Parallelogram lawNarrower topic: The law requires vector operations and a norm; a general metric need not support either.
Riemannian distanceNarrower topic: Riemannian distance gives each connected Riemannian manifold this structure.
Algebraic structureCompared with: Metric spaces equip sets with measurements and axioms, but not algebraic operations.
Basis (topology)Related: Its open balls supply basis members using the metric.
Felix HausdorffCompared with: Every metric space is Hausdorff, but Hausdorff spaces need not come from distances.
Continuous mapping theoremNarrower topic: General statements use metric spaces to define convergence and continuity.
Urysohn's metrization theoremNarrower topic: The theorem asks whether a topology can arise from this distance-based structure.
General topologyCompared with: Every metric induces a topology, but general topology also studies spaces with no compatible metric.
Heine–Cantor theoremNarrower topic: Metrics define the distances used in both continuity and uniform continuity.
Magnitude (mathematics)Narrower topic: Distance generalizes the size-measuring role of absolute value to pairs of points.
Tube lemmaCompared with: The tube lemma requires no distance function, unlike many familiar compactness arguments.
Gromov–Hausdorff convergenceNarrower topic: Gromov–Hausdorff convergence compares spaces through their distance functions.