Cantor set
Noun
Meaning
English Wikipedia has an article on:Cantor setWikipedia
construction of the Cantor set
Cantor set (plural Cantor sets)
(mathematical analysis, topology) A subset of an interval formed by recursively removing an interval in the middle of every connected component of the set.
Synonyms
Examples
A column capital from the Ancient Egyptian site of the island of Philae carries a pattern which resembles the Cantor set.
A subset of the Cantor set which is not Borel measurable The Borel measure is not complete.
Every point of the Cantor set is also an accumulation point of the complement of the Cantor set.
For any point in the Cantor set and any arbitrarily small neighborhood of the point, there is some other number with a ternary numeral of only 0s and 2s, as well as numbers whose ternary numerals contain 1s.
However, the set of endpoints of the removed intervals is countable, so there must be uncountably many numbers in the Cantor set which are not interval endpoints.
In fact, every compact metric space is a continuous image of the Cantor set.