Mu’ayyad al-Din al-Urdi
E869588
Mu’ayyad al-Din al-Urdi was a 13th-century Syrian astronomer, mathematician, and engineer known for his influential work in Islamic astronomy and contributions to pre-Copernican planetary models.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Mu’ayyad al-Din al-Urdi canonical | 4 |
| Mu’ayyad al-Dīn al-ʿUrḍī | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10322266 — 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: Mu’ayyad al-Din al-Urdi Context triple: [Maragha observatory, employed, Mu’ayyad al-Din al-Urdi]
-
A.
Wajih al-Din Mas'ud
Wajih al-Din Mas'ud was a 14th-century Persian leader and religious figure best known as the founder of the Sarbadar movement in Khorasan.
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B.
Muhyi al-Din
Muhyi al-Din is an honorific title meaning "Reviver of the Faith," famously borne by the influential Sufi saint and theologian Abd al-Qadir al-Gilani.
-
C.
Sadr al-Din al-Qunawi
Sadr al-Din al-Qunawi was a prominent 13th-century Persian Sufi philosopher and mystic, renowned for systematizing and elaborating the metaphysical teachings of Ibn Arabi.
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D.
Burhan al-Din
Burhan al-Din is an Islamic honorific title meaning "Proof of the Religion," traditionally bestowed on distinguished religious scholars and jurists.
-
E.
Shihab al-Din
Shihab al-Din is an honorific title in the Islamic scholarly tradition meaning "Meteor of the Faith," often borne by distinguished religious scholars such as Ibn Hajar al-Haytami.
- 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: Mu’ayyad al-Din al-Urdi Target entity description: Mu’ayyad al-Din al-Urdi was a 13th-century Syrian astronomer, mathematician, and engineer known for his influential work in Islamic astronomy and contributions to pre-Copernican planetary models.
-
A.
Wajih al-Din Mas'ud
Wajih al-Din Mas'ud was a 14th-century Persian leader and religious figure best known as the founder of the Sarbadar movement in Khorasan.
-
B.
Muhyi al-Din
Muhyi al-Din is an honorific title meaning "Reviver of the Faith," famously borne by the influential Sufi saint and theologian Abd al-Qadir al-Gilani.
-
C.
Sadr al-Din al-Qunawi
Sadr al-Din al-Qunawi was a prominent 13th-century Persian Sufi philosopher and mystic, renowned for systematizing and elaborating the metaphysical teachings of Ibn Arabi.
-
D.
Burhan al-Din
Burhan al-Din is an Islamic honorific title meaning "Proof of the Religion," traditionally bestowed on distinguished religious scholars and jurists.
-
E.
Shihab al-Din
Shihab al-Din is an honorific title in the Islamic scholarly tradition meaning "Meteor of the Faith," often borne by distinguished religious scholars such as Ibn Hajar al-Haytami.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
Islamic astronomer
ⓘ
mathematician ⓘ medieval scientist ⓘ person ⓘ |
| activeInCentury | 13th century ⓘ |
| alternativeName |
Mu’ayyad al-Dīn al-ʿUrḍī
ⓘ
linked to:
Mu’ayyad al-Din al-Urdi
al-Urdi ⓘ |
| birthPlace | Syria ⓘ |
| citizenship |
Ayyubid Sultanate
ⓘ
linked to:
Ayyubid dynasty
|
| contributedTo |
Maragha astronomical school
ⓘ
linked to:
Maragha observatory
critique of Ptolemaic astronomy ⓘ |
| developed | geometrical devices to replace Ptolemy’s equant ⓘ |
| employer | Maragha observatory ⓘ |
| era | medieval Islamic period ⓘ |
| fieldOfWork |
astronomy
ⓘ
engineering ⓘ mathematics ⓘ |
| influenced |
Ibn al-Shatir
ⓘ
Nasir al-Din al-Tusi ⓘ development of non-Ptolemaic models in Islamicate astronomy ⓘ later Islamic planetary models ⓘ pre-Copernican astronomical tradition ⓘ |
| influencedBy |
Islamic mathematical astronomy
ⓘ
Ptolemy ⓘ
linked to:
Ptolemaios
|
| knownFor |
Urdi lemma
ⓘ
contributions to Islamic astronomy ⓘ geometrical models of planetary motion ⓘ pre-Copernican planetary models ⓘ |
| languageOfWork | Arabic ⓘ |
| movement | Islamic Golden Age ⓘ |
| name | Mu’ayyad al-Din al-Urdi ⓘ |
| notableConcept | Urdi lemma in planetary theory ⓘ |
| notableWork |
Kitāb al-Hayʾa
ⓘ
linked to:
Risāla fī al-hayʾa
Risāla fī Kayfiyyat al-Arṣād ⓘ |
| occupation |
instrument maker
ⓘ
observational astronomer ⓘ |
| partOf | Islamic astronomical tradition ⓘ |
| region | Syrian region of the Islamic world ⓘ |
| specialization |
astronomical instrumentation
ⓘ
theoretical astronomy ⓘ |
| workLocation |
Damascus
ⓘ
Maragha ⓘ
linked to:
Maragheh
|
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: Mu’ayyad al-Din al-Urdi Description of subject: Mu’ayyad al-Din al-Urdi was a 13th-century Syrian astronomer, mathematician, and engineer known for his influential work in Islamic astronomy and contributions to pre-Copernican planetary models.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Mu’ayyad al-Din al-Urdi