| Abbreviation | Definition |
|---|---|
| DTD | Double The Difference |
| DTE | Domain Theory Environment |
| DTFS | Discrete Time Fourier Series |
| DTGT | Discrete-Time Gabor Transform |
| DTMC | Discrete Time Markov Chain |
| DTS | Dynamix Three Space |
| DTT | Disjunctive Truth Table |
| dU | The Derivative of U |
| DUMU | Duke University Mathematics Union |
| DV | Derivative of V |
| DVA | Discriminant Variable Addition |
| DVC | Dimension Vector Connectivity (DVC), one new Mathematics of "Force: Energy" inter-actions |
| DVG | Decidillion |
| DVR | Discrete Variable Representation |
| DWT | Discrete Wavelet Transform |
| dX | the Derivative of X |
| e | 2.71828182845 (approximately) |
| E | Eccentricity |
| E | Elliptical |
| E | Euler number |