Formulas
- Double Mersenne number
- Double complex
- Characteristic function (convex analysis)
- Double coset
- Double extension set theory
- Double groupoid
- Double layer potential
- Double tangent bundle
- Double vector bundle
- Doubling-oriented Doche–Icart–Kohel curve
- Doubly periodic function
- Doubly stochastic matrix
- Dowker space
- Dowling geometry
- Duhamel's principle