PERSON

Malik al-Ashraf Mumahhid al-Dīn ʿUmar ibn Yūsuf ibn ʿUmar ibn ʿAlī ibn Rasūl

Name (arabic)

ملك الأشرف ممهّد الدين عمر بن يوسف بن عمر بن علي بن رسول

Name (translit)

Malik al-Ashraf Mumahhid al-Dīn ʿUmar ibn Yūsuf ibn ʿUmar ibn ʿAlī ibn Rasūl

Alias

Ashraf
al-Ashraf ʿUmar
ʿUmar ibn Yūsuf ibn ʿUmar
Rasulid Sultan al-Ashraf

Flourished

Died

696H/1296J

Lived in

Student of

Notes

al‐Ashraf ʿUmar, the third of the Rasulid sultans in Yemen. See https://tabsira.hypotheses.org/ for a website devoted to him and his work.

Number in MAMS

685

Biography URL

ismi_id

42360

Authored Works

3 works:

Astronomical Instruments

Muʿīn al-ṭālib ʿalá ʿamal al-asṭurlāb (Ashraf) , معين الطالب على عمل الأسطرلاب

Astronomy: General

Kitāb al-tabṣirah fī ʿilm al-nujūm (Ashraf) , كتاب التبصرة في علم النجوم

TECHNOLOGY

References

On Ashraf's almanac.

P. 238 (no. 685).

P. 132 (E8).

On Ashraf in the context of Yemeni astronomy.

On Ashraf's astrolabe and the treatise on its construction. Repr.: King, Islamic Astronomical Instruments, II. London: Variorum Reprints, 1987.
Supplement in King, Zeitschrift für die Geschichte der Arabisch–Islamischen Wissenschaften 4 (1987–1988): 268–269

On the magnetic compass.