# Category:Filter Theory

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This category contains results about Filter Theory.

Definitions specific to this category can be found in Definitions/Filter Theory.

**Filter Theory** is a branch of topology which studies filters.

## Pages in category "Filter Theory"

The following 20 pages are in this category, out of 20 total.

### E

- Equivalence of Definitions of Continuous Mapping between Topological Spaces/Point
- Equivalence of Definitions of Ultrafilter on Set
- Equivalence of Definitions of Ultrafilter on Set/Definition 1 iff Definition 3
- Equivalence of Definitions of Ultrafilter on Set/Equivalence of Definitions 1, 2 and 3
- Every Ultrafilter Converges implies Every Filter has Limit Point