Number |
|
When | What | Where |
Circa 20000 B.C. | Whole numbers | Africa - How old is Mathematics? |
Circa 2800 B.C. | Rational numbers | India |
800 - 500 B.C. | Irrational numbers | India |
5th Century B.C. | zero | India |
100 B.C. | Negative numbers | China |
16th Century | Complex numbers | Italy - Niccolo Fontana Tartaglia, Gerolamo Cardano |
1761 | Transcendental numbers | Switzerland - Johann Heinrich Lambert |
1843 | Quaternions | Ireland - Sir William Rowan Hamilton |
1895 | Transfinite numbers | Germany - Georg Cantor |
1966 | Hyperreal numbers | U.S.A. - Abraham Robinson |