👉 In mathematics, a pseudometric is a function that assigns to each pair of points in a set (the "domain") a real number called its metric. The domain consists of all the points in the set for which the metric is defined. The metric can be used to measure distances between pairs of points or to compare the lengths of segments connecting them. For example, if we have a set of points {p1, p2, ..., pn} and we want to know how far apart they