Formulas
- De Moivre's formula
- Quartic surface
- Quasi-sphere
- Quaternion
- De Rham cohomology
- Dedekind eta function
- Deductive reasoning
- Degenerate bilinear form
- Quaternionic analysis
- Delta-ring
- Dense graph
- Derivations of the Lorentz transformations
- Quaternions and spatial rotation
- Robinson–Schensted correspondence
- Rodion Kuzmin