Wikipedia's first sentence called it “arab mathematician and a member of the banu hud family”. Today it says “mathematician”. The one-line description Wikipedia serves to search engines and AI systems read “Ruler of Zaragoza (from 1081 to 1085) Abu Amir”. It now reads “Ruler of Zaragoza (from 1081 to 1085) House Banu Hud Abu Amir”.
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Machine-checked against the full current article on 2026-08-03.
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The opening as it read in 2015
Where the Banu Hūd family kept their rule until 1100. Saragossa, which encompasses modern day Aragon, Spain, had its early influence from the Roman Empire. In medieval Islam there was a wave of translations of ancient Greek and Roman texts. Ranging from philosophy, to medicine, to astronomy, and the more influential mathematical translations. Yusuf son to the king, Ahmad ibn Sulayman al-Muqtadir . His father Ahmad was known for philosophy, astronomy, as well as translations of mathematics. Both father and son, as well as medieval Islamic translators such as the Banū Mūsā were known for their expansions on ancient Greek and Roman ideals. There was a stigma in the periods following medieval Islam that Islamic translators only copied the ancient texts, offering no intellectual addition. Later it is proven that translators such as Ibn Sīnā and Yusuf offered copious and revolutionary input into their expansion on ancient ideas. Yusuf ibn Ahmad al-Mu'taman ibn Hūd wrote a mathematical treatise called Kitab al-Istikmāl ( Arabic ,كتاب الإستكمال, Perfection or Comprehensive Treatise) in mathematics , where it was edited by Maimonides (ca. 1135 – 1204). Ceva's theorem which is often attributed to the Italian mathematician Giovanni Ceva (d. 1734) was proved much earlier by Al-Mu'taman ibn Hūd. It remains unknown whether Giovanni had discovered this geometry on his own or if he had found a translation of al-Mu'taman's treatise. Ceva's parallel theorem proved by Al-Mu'taman ibn Hūd.1
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The opening as it stood in 2010
Yusuf ibn Ahmad al-Mu'taman ibn Hud was an Arab mathematician and a member of the Banu Hud family, al-Mutamin ruled Zaragoza from 1082 to 1085. He was the son of the previous ruler, Ahmad ibn Sulayman al-Muqtadir . He also wrote Kitab al-Istikmal ( Arabic ,كتاب الإستكمال, Book of Perfection) in mathematics .
Red text was written in or rewritten since the previous snapshot. Their copy is revision 342940309.
The opening as it stood in 2020 13 passages from the previous snapshot no longer appear
Abu Amir Yusuf ibn Ahmad ibn Hud ( ; died c. 1085 ), known by his regnal name al-Mu'taman Billah ( ), was the third king of the Banu Hud dynasty who ruled over the Taifa of Zaragoza from 1081 to 1085.Yusuf al-Mu'taman reigned during the height of power of Muslim Zaragoza, following the thriving period of his father Ahmad al-Muqtadir .He continued his father's efforts and created around him a court of intellectuals, living in the beautiful palace of Aljafería , nicknamed as "the palace of joy".Al-Mu'taman was also a scholarly king and a patron of science, philosophy and arts.He knew astrology , philosophy , and especially mathematics , a discipline in which he wrote the most important treatise from al-Andalus , the Kitab al-Istikmal ("Book of Perfection").
Red text was written in or rewritten since the previous snapshot. Their copy is revision 955834529.
The opening as it stood on October 6, 2023
Ruler of Zaragoza (from 1081 to 1085) Abu Amir Yusuf ibn Ahmad ibn Hud ( ; died c. 1085 ), more commonly known as al-Mu'taman , was a mathematician, and also one of the kings of the Taifa of Zaragoza .The name al-Mu'taman is itself a shortening of his full regnal name al-Mu'taman Billah ( ).Al-Mu'taman was the third king of the Banu Hud dynasty, reigning from 1081 to 1085, at the height of power of Muslim Zaragoza, following the thriving period of his father Ahmad al-Muqtadir . He continued his father's efforts and created around him a court of intellectuals, living in the beautiful palace of Aljafería , nicknamed as "the palace of joy". As king, Al-Mu'taman was a patron of science, philosophy and arts, and was himself a scholar of considerable accomplishment.He knew astrology , philosophy , and especially mathematics , a discipline in which he wrote the most important treatise to come out of the al-Andalus region in the 11th century, the Kitab al-Istikmal ("Book of Perfection").
Red text was written in or rewritten since the previous snapshot. Their copy is revision 1174801941.
The opening as it stood in 2025
Ruler of Zaragoza (from 1081 to 1085) Abu Amir Yusuf ibn Ahmad ibn Hud ( Arabic : أبو عامر يوسف بن أحمد بن هود , romanized : Abū ʿĀmir Yūsuf ibn Aḥmad ibn Hūd ; died c. 1085 ), more commonly known as al-Mu'taman , was a mathematician, and also one of the kings of the Taifa of Zaragoza .The name al-Mu'taman is itself a shortening of his full regnal name al-Mu'taman Billah ( Arabic : المؤتمن بالله , romanized : al-Mūʾtaman bi-ʾLlāh , lit. ' Trustee through God ' ). Al-Mu'taman was the third king of the Banu Hud dynasty, reigning from 1081 to 1085, at the height of power of Muslim Zaragoza, following the thriving period of his father Ahmad al-Muqtadir . He continued his father's efforts and created around him a court of intellectuals, living in the beautiful palace of Aljafería , nicknamed as "the palace of joy". As king, Al-Mu'taman was a patron of science, philosophy and arts, and was himself a scholar of considerable accomplishment. He knew astrology , philosophy , and especially mathematics , a discipline in which he wrote the most important treatise to come out of the al-Andalus region in the 11th century, the Kitab al-Istikmal ("Book of Perfection").
Red text was written in or rewritten since the previous snapshot. Their copy is revision 1286774347. This is our newest snapshot; the live article may have moved again since.
Today
Wikipedia's first sentence called it “arab mathematician and a member of the banu hud family”. Today it says “mathematician”. The one-line description Wikipedia serves to search engines and AI systems read “Ruler of Zaragoza (from 1081 to 1085) Abu Amir”. It now reads “Ruler of Zaragoza (from 1081 to 1085) House Banu Hud Abu Amir”. Read the current article and compare.
2010
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Oct '23
2025
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What Wikipedia says this is
Every article opens by defining its subject. This one was redefined since 2010, and today's defining sentence is their current revision.
Then
arab mathematician and a member of the banu hud family
Now
mathematician
Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.
