Countable open and closed functions

Details Countable open and closed functions Countable open and closed functions

2011-02-09

arxiv.org/abs/1102.1954v3

Mathematics

General Topology

5 pages. arXiv admin note: substantial text overlap with arXiv:1102.3253

Scientific paper

We define two natural classes of functions, called 2-open and 2-closed, that
are closest to open and closed functions.
We show that they have the following property: there are $X_i \subset X$ $
(i=1,2,...$) such that $f|X_i$ are open or closed functions onto $f(X_i)$ and
$f(X_i)$ cover $Y.$

Affiliated with

Also associated with

No associations

Rating

Countable open and closed functions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Countable open and closed functions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Countable open and closed functions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-650753