Lebesgue number
Sign in to saveAlso known as Lebesgue covering lemma, Lebesgue's number lemma
given a cover of a metric space, a positive real number δ such that any set of diameter smaller than δ is a subset of a member of the cover
In the Vinony graph
Within Vinony's link graph, Lebesgue number is referenced by 57 other articles, and connects out to metrizable space, Intrinsic metric and International Standard Book Number.
Vinony files it under Lemmas and Theorems in topology.
Its subject is documented across 12 Wikipedia language editions.