Formulas
- Finite measure
- Finite ring
- Finite topological space
- Finite von Neumann algebra
- Finitely generated algebra
- Finiteness properties of groups
- First-countable space
- First-order partial differential equation
- First uncountable ordinal
- First variation
- Fischer's inequality
- Fisher's inequality
- Fitting subgroup
- Five-dimensional space
- Fixed-point combinator