Encyclopedia > G-delta set

Article Content

G-delta set

A set is called a G delta set if it can be written as the countable intersection of open sets. Any closed set is a G delta set. The complement of a G delta set is called a F sigma set[?]. It is easy to see that any open set is a F sigma set.

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Rameses

... name means "Child of the Sun". This is a disambiguation page; that is, one that just points to other pages that might otherwise have the same name. If you followed a ...