Imaginary Point
A pair of values 
and 
one or both of which is Complex.
References
Woods, F. S. Higher Geometry: An Introduction to Advanced Methods in Analytic Geometry. New York: Dover, p. 2, 1961.
- Divergent Sequence
- Divergent Series
- Diversity Condition
- Divide
- Divided Difference
- Divine Proportion
- Divisibility Tests
- Divisible
- Division
- Division Algebra
- Division Lemma
- Division Ring
- Divisor
- Divisor Function
- Divisor Theory
- Dixon-Ferrar Formula
- Dixon's Factorization Method
- Dixon's Random Squares Factorization Method
- Dixon's Theorem
- D-Number
- Dobinski's Formula
- Dodecadodecahedron
- Dodecagon
- Dodecagram
- Dodecahedral Conjecture