Formulas
- Converse (logic)
- Converse relation
- Gershgorin circle theorem
- Convex body
- Convex conjugate
- Global field
- Glossary of game theory
- Glossary of mechanical engineering
- Glossary of order theory
- Convex function
- Gluing axiom
- Going up and going down
- Goldbach's conjecture
- Goldbach–Euler theorem
- Golden–Thompson inequality