Al-Ashraf Umar II

Umar Ibn Yusuf
عمر بن يوسف بن عمر بن علي بن رسول الغساني
Bornc. 1242
Died22 November 1296
Yemen
EraIslamic Golden Age
Known forAstronomy, mathematics
Al-Ashraf Umar II
Sultan
Reignc. 636 – 654 AD
PredecessorAl-Muzaffar Yusuf I
Successoral-Mu'ayyad Da'ud
DynastyRasulid

Al‐Malik Al‐Ashraf (Mumahhid Al‐Din) Umar Ibn Yūsuf Ibn Umar Ibn Alī Ibn Rasul (Arabic: عمر بن يوسف بن عمر بن علي بن رسول الغساني), known as Umar Ibn Yusuf (c. 1242 – 1296) was the third Rasulid sultan, who ruled as Al-Ashraf Umar II. He was also a mathematician, astronomer and physician.


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