Cover (topology)
In mathematics, a cover of a set X is a collection of sets whose union contains X as a subset. Formally, if
is an indexed family of sets Uα, then C is a cover of X if
Read more about Cover (topology): Cover in Topology, Refinement, Compactness, Covering Dimension
Famous quotes containing the word cover:
“Laid out for death, let thy last kindness be
With leaves and moss-work for to cover me:
And while the wood-nymphs my cold corpse inter,
Sing thou my dirge, sweet-warbling chorister!
For epitaph, in foliage, next write this:
Here, here the tomb of Robin Herrick is.”
—Robert Herrick (1591–1674)