Talk:Saturated set
 | This article is rated Stub-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects: | ||||||||||
| |||||||||||
Two different concepts[edit]
The two definitions are given here are not equivalent, so at least the phrasing must be changed.Lapasotka (talk) 11:46, 27 February 2018 (UTC)
For example: let p : R → S be a surjection which wraps the reals around a circle; let C be an interval in R such that p(C) ≠ S. Then C is an open set and so saturated by the first definition, but p−1p(C)≠C.