Umar Ibn Yusuf | |||||||||||||||
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عمر بن يوسف بن عمر بن علي بن رسول الغساني | |||||||||||||||
| Born | c. 1242 | ||||||||||||||
| Died | 22 November 1296 Yemen | ||||||||||||||
| Era | Islamic Golden Age | ||||||||||||||
| Known for | Astronomy, mathematics | ||||||||||||||
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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.