Formulas
- Eguchi–Hanson space
- Ehrenfeucht–Fraïssé game
- Ehresmann's lemma
- Eigenplane
- Eight-dimensional space
- Eilenberg–Ganea theorem
- Eilenberg–MacLane space
- Eilenberg–Maclane spectrum
- Eilenberg–Mazur swindle
- Eilenberg–Moore spectral sequence
- Eilenberg–Steenrod axioms
- Eilenberg–Zilber theorem
- Einstein function
- Eisenstein's theorem
- Eisenstein sum