Claudius Ptolemaeus
E40246
Claudius Ptolemaeus, commonly known as Ptolemy, was a Greco-Roman mathematician, astronomer, and geographer whose geocentric model of the universe and influential works like the Almagest shaped scientific thought for over a millennium.
Aliases (3)
- Ptolemy ×15
- Claudius Ptolemy ×2
- Ptolemy (geographer) ×1
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
Greco-Roman scholar
→
astrologer → astronomer → geographer → human → mathematician → |
| activeIn |
Alexandria
→
|
| alsoKnownAs |
Ptolemaios
→
Ptolemy → Κλαύδιος Πτολεμαῖος → |
| birthPlace |
Alexandria
→
Roman Egypt → |
| catalogued |
over 1,000 fixed stars
→
|
| citizenship |
Roman Empire
→
|
| compiled |
star catalogue in the Almagest
→
|
| contributedTo |
trigonometry
→
|
| developed |
geocentric model of the universe
→
|
| era |
Roman Imperial period
→
|
| ethnicGroup |
Greek
→
|
| fieldOfWork |
astrology
→
astronomy → geography → mathematics → music theory → optics → |
| floruit |
2nd century
→
c. 100–170 CE → |
| influenced |
Claudius Copernicus
→
European Renaissance astronomy → Islamic astronomy → geography in the Middle Ages → medieval astronomy → |
| influencedBy |
Hipparchus
→
|
| introduced |
equant in planetary theory
→
|
| languageOfWorkOrName |
Ancient Greek
→
|
| name |
Claudius Ptolemaeus
→
|
| notableWork |
Almagest
→
Geographia → Harmonics → Mathematike Syntaxis → Optics → Planetary Hypotheses → Tetrabiblos → |
| proposed |
Earth-centered cosmology
→
|
| systematized |
ancient Greek astronomy
→
ancient geographic knowledge → |
| used |
chord tables
→
deferents in planetary theory → eccentrics in planetary theory → epicycles in planetary theory → |
| workPeriod |
c. 127–151 CE
→
|
Referenced by (20)
| Subject (surface form when different) | Predicate |
|---|---|
|
Dialogue Concerning the Two Chief World Systems
("Ptolemy")
→
Gerardus Mercator ("Ptolemy") → Ibn al-Haytham ("Ptolemy") → Johannes Kepler ("Ptolemy") → Nicolaus Copernicus ("Ptolemy") → Tycho Brahe ("Ptolemy") → Ulugh Beg ("Ptolemy") → |
influencedBy |
|
Buri
("Ptolemy")
→
Canopus ("Ptolemy (geographer)") → Marcomanni ("Ptolemy") → Quadi ("Ptolemy") → |
mentionedBy |
|
Claudius Ptolemaeus
("Ptolemy")
→
|
alsoKnownAs |
|
The School of Athens
("Ptolemy")
→
|
depicts |
|
Ptolemaic system
("Claudius Ptolemy")
→
|
developedBy |
|
Cancer
("Ptolemy")
→
|
firstCatalogedBy |
|
Claudius Ptolemaeus
("Ptolemy")
→
|
isKnownAs |
|
Vestini
("Ptolemy")
→
|
knownFrom |
|
Claudius Ptolemaeus
→
|
name |
|
Ptolemaic system
("Claudius Ptolemy")
→
|
namedAfter |
|
Claudius
→
|
wasBorneBy |