Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
refactor(topology/sequences): redefine
is_seq_closed
, define Fréche…
…t-Urysohn spaces (#15953) * redefine `is_seq_closed` as "the set contains every limit of a sequence of points from this set"; * delete `is_seq_closed_of_def` and `is_seq_closed.mem_of_tendsto`, because now we use this property as the definition; * rename `sequential_space` to `frechet_urysohn_space`, add new `sequential_space`; this way our definitions agree with textbooks.
- Loading branch information
Showing
2 changed files
with
182 additions
and
115 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters