Show that the railway metric is a metric
11094
How to prove that the French railways metric is a metric
9775
Metric on Cartesian Product
36566
Equivalence classes and metric spaces
45763
Minkowski diagram and length contraction
74607
Variation of the metric with respect to the metric
95783
Fixed points of contractions in metric spaces
65840
Norm induced by metric
142414
Generalization of metric spaces?
137881
A not complete metric space?
150011
Proof completeness of $(X,d)$ given $d$ is French railway metric
146967
Understanding equivalent metric spaces
52316
Geodesics and Curves on a Plane
53812
Metric is continuous function
27652
metric on the Euclidean Group
108779
How to prove that this series is a metric: $d(x,y):=\sum_{i=0}^\infty \frac{|x_i -y_i|}{2^i (1+|x_i-y_i|)}$
135315
Proving whether a function on the set of real sequences is a metric
132641
Proving that Euclidean Space is a complete metric space