## Most recent change of Number

Edit made on November 29, 2008 by ColinWright at 11:49:16

Deleted text in red /
Inserted text in green

WW

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The definition of number in Mathematics has developed throughout the ages.

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Circa 20000 B.C.

Circa 2800 B.C.

800 - 500 B.C.

5th Century B.C.

100 B.C.

16th Century

1761

1843

1895

1966

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Whole numbers

Rational numbers

Irrational numbers

zero

Negative numbers

Complex numbers

Transcendental numbers

Quaternions

Transfinite numbers

Hyperreal numbers

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Africa - How old is Mathematics?

India

India

India

China

Italy - Niccolo Fontana Tartaglia, Gerolamo Cardano

Switzerland - Johann Heinrich Lambert

Ireland - Sir William Rowan Hamilton

Germany - Georg Cantor

U.S.A. - Abraham Robinson

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| *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 |