Trihedron
A Triple of three arbitrary vectors with common vertex. The vectors are often taken to beunit vectors, and the term trihedron is perhaps most commonly encountered in the consideration of the unit OrthogonalVectors given by 
, 
, and 
(Tangent Vector, Normal Vector, and BinormalVector).
- Database
- Data Structure
- Daubechies Wavelet Filter
- Davenport-Schinzel Sequence
- Dawson's Integral
- Day of Week
- de Bruijn Constant
- de Bruijn Diagram
- de Bruijn Graph
- de Bruijn-Newman Constant
- de Bruijn Sequence
- de Bruijn's Theorem
- Debye Functions
- Debye's Asymptotic Representation
- Decagon
- Decagonal Number
- Decagram
- Decic Surface
- Decidable
- Decillion
- Decimal
- Decimal Expansion
- Decimal Period
- Decision Problem
- Decision Theory