Yahya ibn Abi Mansur (Arabic: یحیی ابن ابی منصور), was a senior Persian official from the Banu al-Munajjim family, who served as an astronomer/astrologer at the court of Abbasid caliph al-Ma'mun. His Persian name was Bizist, son of Firuzan (بزیست فیروزان). Since his father Abu Mansur Aban was an astrologer in service of caliph al-Mansur, it can be concluded that Yahya spent his childhood in Baghdad. His first known position was as an astrologer for al-Fadl ibn Sahl, vizier of the caliph al-Ma'mun. After the assassination of al-Fadl, Yahya converted to Islam and adopted his Arabic name. He was also associated with the House of Wisdom and is mentioned as a teacher of the Banu Musa. He died near Aleppo in 830 CE.
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| - يحيى بن أبي منصور (ar)
- Yaḥyā ibn Abī Manṣūr (fr)
- Yahya ibn Abi Mansur (en)
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| - يحيى بن أبي منصور كان مسؤولًا فارسيًّا بارزًا من عائلة بني المنجم، عمل فلكيًّا (منجم)، في بلاط الخليفة العباسي المأمون. كان اسمه الفارسي بيزست، أي ابن فيروزان (بزیست فیروزان). لأن والده أبو منصور أبان كان عالم فلك (منجم) في خدمة الخليفة المنصور، يمكن الاستنتاج أن يحيى قضى طفولته في بغداد. أول منصب معروف له كان فلكيًّا (منجم) للفضل بن سهل، وزير الخليفة المأمون. بعد اغتيال الفضل، اعتنق يحيى الإسلام واتخذ اسمه العربي. كما ارتبط ببيت الحكمة وذُكر مدرسًا لبني موسى. تُوفي قرب حلب عام 830 م. (ar)
- Yahya ibn Abi Mansur (Arabic: یحیی ابن ابی منصور), was a senior Persian official from the Banu al-Munajjim family, who served as an astronomer/astrologer at the court of Abbasid caliph al-Ma'mun. His Persian name was Bizist, son of Firuzan (بزیست فیروزان). Since his father Abu Mansur Aban was an astrologer in service of caliph al-Mansur, it can be concluded that Yahya spent his childhood in Baghdad. His first known position was as an astrologer for al-Fadl ibn Sahl, vizier of the caliph al-Ma'mun. After the assassination of al-Fadl, Yahya converted to Islam and adopted his Arabic name. He was also associated with the House of Wisdom and is mentioned as a teacher of the Banu Musa. He died near Aleppo in 830 CE. (en)
- Yaḥyā ibn Abī Manṣūr (? -c.832) est un astronome persan du IXe siècle. Yaḥyā ibn Abī Manṣūr fut chargé par le calife Al-Ma’mūn de coordonner l'équipe de savants réunis pour un vaste programme d'observations astronomiques. Il participa également à une campagne de mesure de la circonférence de la terre organisée par ce même calife. (fr)
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| - يحيى بن أبي منصور كان مسؤولًا فارسيًّا بارزًا من عائلة بني المنجم، عمل فلكيًّا (منجم)، في بلاط الخليفة العباسي المأمون. كان اسمه الفارسي بيزست، أي ابن فيروزان (بزیست فیروزان). لأن والده أبو منصور أبان كان عالم فلك (منجم) في خدمة الخليفة المنصور، يمكن الاستنتاج أن يحيى قضى طفولته في بغداد. أول منصب معروف له كان فلكيًّا (منجم) للفضل بن سهل، وزير الخليفة المأمون. بعد اغتيال الفضل، اعتنق يحيى الإسلام واتخذ اسمه العربي. كما ارتبط ببيت الحكمة وذُكر مدرسًا لبني موسى. تُوفي قرب حلب عام 830 م. (ar)
- Yaḥyā ibn Abī Manṣūr (? -c.832) est un astronome persan du IXe siècle. Yaḥyā ibn Abī Manṣūr fut chargé par le calife Al-Ma’mūn de coordonner l'équipe de savants réunis pour un vaste programme d'observations astronomiques. Il participa également à une campagne de mesure de la circonférence de la terre organisée par ce même calife. Yaḥyā ibn Abī Manṣūr procéda à des observations et des mesures systématiques, qu'il exploita dans son Al-Zij al-Mumtahan (La table vérifiée), où il recalcula les valeurs des paramètres donnés dans l’Almageste et montra que, contrairement à ce qu'affirmait Ptolémée, le mouvement de l'apogée de l'orbe du soleil est lié au mouvement de précession des étoiles fixes. Cet ouvrage, commandé par le sultan servit de référence pour les astronomes ultérieurs qui le complétèrent. (fr)
- Yahya ibn Abi Mansur (Arabic: یحیی ابن ابی منصور), was a senior Persian official from the Banu al-Munajjim family, who served as an astronomer/astrologer at the court of Abbasid caliph al-Ma'mun. His Persian name was Bizist, son of Firuzan (بزیست فیروزان). Since his father Abu Mansur Aban was an astrologer in service of caliph al-Mansur, it can be concluded that Yahya spent his childhood in Baghdad. His first known position was as an astrologer for al-Fadl ibn Sahl, vizier of the caliph al-Ma'mun. After the assassination of al-Fadl, Yahya converted to Islam and adopted his Arabic name. He was also associated with the House of Wisdom and is mentioned as a teacher of the Banu Musa. He died near Aleppo in 830 CE. (en)
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