Mu’ayyad al-Din al-Urdi

E869588

Islamic astronomer mathematician medieval scientist person

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.

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All labels observed (1)

Label	Occurrences
Mu’ayyad al-Din al-Urdi canonical	3

Statements (42)

Predicate	Object
instanceOf	Islamic astronomer ⓘ mathematician ⓘ medieval scientist ⓘ person ⓘ
activeInCentury	13th century ⓘ
alternativeName	Mu’ayyad al-Dīn al-ʿUrḍī NERFINISHED ⓘ al-Urdi NERFINISHED ⓘ
birthPlace	Syria NERFINISHED ⓘ
citizenship	Ayyubid Sultanate NERFINISHED ⓘ
contributedTo	Maragha astronomical school NERFINISHED ⓘ critique of Ptolemaic astronomy ⓘ
developed	geometrical devices to replace Ptolemy’s equant ⓘ
employer	Maragha observatory NERFINISHED ⓘ
era	medieval Islamic period ⓘ
fieldOfWork	astronomy ⓘ engineering ⓘ mathematics ⓘ
influenced	Ibn al-Shatir NERFINISHED ⓘ Nasir al-Din al-Tusi NERFINISHED ⓘ development of non-Ptolemaic models in Islamicate astronomy ⓘ later Islamic planetary models ⓘ pre-Copernican astronomical tradition ⓘ
influencedBy	Islamic mathematical astronomy ⓘ Ptolemy NERFINISHED ⓘ
knownFor	Urdi lemma NERFINISHED ⓘ contributions to Islamic astronomy ⓘ geometrical models of planetary motion ⓘ pre-Copernican planetary models ⓘ
languageOfWork	Arabic ⓘ
movement	Islamic Golden Age NERFINISHED ⓘ
name	Mu’ayyad al-Din al-Urdi NERFINISHED ⓘ
notableConcept	Urdi lemma in planetary theory ⓘ
notableWork	Kitāb al-Hayʾa NERFINISHED ⓘ Risāla fī Kayfiyyat al-Arṣād NERFINISHED ⓘ
occupation	instrument maker ⓘ observational astronomer ⓘ
partOf	Islamic astronomical tradition ⓘ
region	Syrian region of the Islamic world ⓘ
specialization	astronomical instrumentation ⓘ theoretical astronomy ⓘ
workLocation	Damascus NERFINISHED ⓘ Maragha NERFINISHED ⓘ

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Maragha observatory → employed → Mu’ayyad al-Din al-Urdi ⓘ

Urdi lemma → developer → Mu’ayyad al-Din al-Urdi ⓘ

Urdi lemma → namedAfter → Mu’ayyad al-Din al-Urdi ⓘ