# Mathematician:Ptolemy

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## Contents

## Mathematician

Roman citizen, of either Greek or Egyptian ancestry.

Mathematician, astronomer and general all-round scientist.

Best known for being the author of several scientific works, including *Almagest*.

## Nationality

Roman (of Greek or Egyptian origin).

## History

- Born: c 90 CE, Ptolemais Hermiou in the Thebaid
- Died: c 168 CE, Alexandria in Egypt

## Theorems

Results named for **Ptolemy** can be found here.

## Publications

- c. 150:
*Mathematical Syntaxis*, otherwise known as*Almagest*("The Greatest") (on astronomy) *Planetary Hypotheses*(on astronomy)*Handy Tables*(on astronomy)*Phaseis (Risings of the Fixed Stars)**Geographia**Apotelesmatika*("Astrological Outcomes" or "Effects") or (in Latin)*Tetrabiblos*("Four books") (on astrology)*Harmonics*(on music theory)*Optics*

## Also known as

Latin name: **Claudius Ptolemaeus**, in Greek: **Κλαύδιος Πτολεμαῖος** (Klaúdios Ptolemaîos), but known generally as **Ptolemy** (pronounced ** Toll-em-ee**).

## Sources

- 1986: David Wells:
*Curious and Interesting Numbers*... (previous) ... (next): A List of Mathematicians in Chronological Sequence - 1992: George F. Simmons:
*Calculus Gems*... (previous) ... (next): Chapter $\text {B}.25$: Kepler's Laws and Newton's Law of Gravitation - 1997: David Wells:
*Curious and Interesting Numbers*(2nd ed.) ... (previous) ... (next): A List of Mathematicians in Chronological Sequence - 2008: David Nelson:
*The Penguin Dictionary of Mathematics*(4th ed.) ... (previous) ... (next): Entry:**Ptolemy, Claudius**(2nd century ad) - 2008: Ian Stewart:
*Taming the Infinite*... (previous) ... (next): Chapter $5$: Eternal Triangles - 2014: Christopher Clapham and James Nicholson:
*The Concise Oxford Dictionary of Mathematics*(5th ed.) ... (previous) ... (next): Entry:**Ptolemy (Claudius Ptolemaeus)**(2nd century ad)