Imaginary Number
A Complex Number which has zero Real Part, so that it can be written as a Real Number multiplied by the``imaginary unit'' i (equal to 
).
References
Conway, J. H. and Guy, R. K. The Book of Numbers. New York: Springer-Verlag, pp. 211-216, 1996.
- Harmonic System of Points
- Harmonious Graph
- Harnack's Inequality
- Harnack's Theorems
- Harshad Number
- Hartley Transform
- Hart's Inversor
- Hart's Theorem
- HashLife
- Hasse-Davenport Relation
- Hasse Diagram
- Hasse-Minkowski Theorem
- Hasse Principle
- Hasse's Algorithm
- Hasse's Conjecture
- Hasse's Resolution Modulus Theorem
- Hat
- Haupt-Exponent
- Hausdorff Axioms
- Hausdorff-Besicovitch Dimension
- Hausdorff Dimension
- Hausdorff Measure
- Hausdorff Paradox
- Hausdorff Space
- Haversine