Mathematician:Claudius Ptolemy

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.

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

 * Ptolemy's Theorem
 * Ptolemy's Formulas (also known as Compound Angle Formulas)


 * Ptolemaic Astronomy

Publications

 * c. 150: Mathematical Syntaxis, otherwise known as ("The Greatest") (on astronomy)
 * c. 150: ("Astrological Outcomes" or "Effects") or (in Latin) Tetrabiblos ("Four books") (on astrology)


 * Planetary Hypotheses (on astronomy)
 * Handy Tables (on astronomy)
 * Phaseis (Risings of the Fixed Stars)
 * Geographia
 * Harmonics (on music theory)
 * Optics

Also known as
Latin name: Claudius Ptolemaeus, in Greek: Κλαύδιος Πτολεμαῖος (Klaúdios Ptolemaîos).

Known generally as Ptolemy (pronounced Toll-em-ee).