> For the complete documentation index, see [llms.txt](https://mandober.gitbook.io/math-debrief/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mandober.gitbook.io/math-debrief/200-set-theory/set-properties/basic-set-properties.md).

# Basic set properties

* set equality
* set equivalence
* order
* uniquencess

the empty sets non-empty sets

Sets are necessarily considered *containers* since they potentially contain objects.

The only set that contains no objects is the empty set.