Theodorus of Cyrene
E211536
Theodorus of Cyrene was an ancient Greek mathematician and philosopher known for his work on irrational numbers and for teaching prominent figures such as Plato’s associate Theaetetus.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Theodorus of Cyrene canonical | 8 |
| Theodorus | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1911246 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Theodorus of Cyrene Context triple: [Theaetetus, featuresCharacter, Theodorus of Cyrene]
-
A.
Xenocrates
Xenocrates was a prominent ancient Greek philosopher who led Plato’s Academy and significantly developed Platonic and early Academic thought.
-
B.
Theodorus
Theodorus is a given name most notably borne by Theodorus van Gogh, the father of the famous painter Vincent van Gogh.
-
C.
Theodorus
Theodorus is a statesman known for his political leadership and public service.
-
D.
Heraclides Ponticus
Heraclides Ponticus was a 4th-century BCE Greek philosopher and astronomer known for proposing that the Earth rotates on its axis and for early heliocentric ideas.
-
E.
Philo of Byzantium
Philo of Byzantium was a Hellenistic engineer and writer known for his works on mechanics and for one of the earliest surviving accounts of the Seven Wonders of the Ancient World.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Theodorus of Cyrene Target entity description: Theodorus of Cyrene was an ancient Greek mathematician and philosopher known for his work on irrational numbers and for teaching prominent figures such as Plato’s associate Theaetetus.
-
A.
Xenocrates
Xenocrates was a prominent ancient Greek philosopher who led Plato’s Academy and significantly developed Platonic and early Academic thought.
-
B.
Theodorus
Theodorus is a given name most notably borne by Theodorus van Gogh, the father of the famous painter Vincent van Gogh.
-
C.
Theodorus
Theodorus is a statesman known for his political leadership and public service.
-
D.
Heraclides Ponticus
Heraclides Ponticus was a 4th-century BCE Greek philosopher and astronomer known for proposing that the Earth rotates on its axis and for early heliocentric ideas.
-
E.
Philo of Byzantium
Philo of Byzantium was a Hellenistic engineer and writer known for his works on mechanics and for one of the earliest surviving accounts of the Seven Wonders of the Ancient World.
- F. None of above. chosen
Statements (33)
| Predicate | Object |
|---|---|
| instanceOf |
ancient Greek mathematician
ⓘ
ancient Greek philosopher ⓘ person ⓘ |
| activity | taught mathematics in Athens ⓘ |
| approximateDate |
5th century BCE
ⓘ
late 5th century BCE ⓘ |
| associatedWith | Cyrenaic intellectual tradition ⓘ |
| era | Classical Greek period ⓘ |
| ethnicGroup | Greek ⓘ |
| fieldOfWork |
geometry
ⓘ
mathematics ⓘ philosophy ⓘ |
| gender | male ⓘ |
| influenced |
Theaetetus of Athens
ⓘ
linked to:
Theaetetus
later Greek mathematics on irrationality ⓘ |
| knownFor |
geometrical proofs of irrationality
ⓘ
influence on Plato’s dialogue Theaetetus ⓘ teaching Theaetetus ⓘ
linked to:
Theaetetus
work on irrational numbers ⓘ |
| language | Ancient Greek ⓘ |
| mentionedIn |
Plato’s dialogue Theaetetus
ⓘ
linked to:
Plato's Theaetetus
|
| notableIdea | finite demonstration of irrational square roots up to a certain number ⓘ |
| occupation |
mathematician
ⓘ
philosopher ⓘ teacher ⓘ |
| placeOfOrigin | Cyrene ⓘ |
| sourceOfInformation |
Plato’s Theaetetus
ⓘ
linked to:
Plato's Theaetetus
|
| student |
Plato’s associate Theaetetus
ⓘ
Theaetetus ⓘ |
| studied |
incommensurable magnitudes
ⓘ
irrational square roots ⓘ |
| taught |
geometry
ⓘ
theory of irrational numbers ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Theodorus of Cyrene Description of subject: Theodorus of Cyrene was an ancient Greek mathematician and philosopher known for his work on irrational numbers and for teaching prominent figures such as Plato’s associate Theaetetus.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Plato's dialogue "Sophist"
linked to: Theodorus of Cyrene
subject linked to:
Plato’s associate Theaetetus
subject linked to:
Plato’s associate Theaetetus