1080 - 1138

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Abū Bakr Muḥammad ibn Yaḥyà ibn aṣ-Ṣā’igh at-Tūjībī ibn Bājja (Arabic: أبو بكر محمد بن يحيى بن الصائغ التجيبي بن باجة), best known by his Latinised name Avempace (; c. 1085 – 1138), was an Arab Andalusian polymath, whose writings include works regarding astronomy, physics, and music, as well as philosophy, medicine, botany, and poetry.He was the author of the Kitāb an-Nabāt ("The Book of Plants"), a popular work on botany, which defined the sex of plants. His philosophical theories influenced the work of Ibn Rushd (Averroes) and Albertus Magnus. Most of his writings and books were not completed (or well-organized) due to his early death. Read more on Wikipedia

Since 2007, the English Wikipedia page of Avempace has received more than 148,755 page views. His biography is available in 44 different languages on Wikipedia (up from 42 in 2019). Avempace is the 29th most popular astronomer (down from 21st in 2019), the 136th most popular biography from Spain (down from 101st in 2019) and the most popular Astronomer.

Avempace is most famous for his philosophical work, The Incoherence of the Philosophers.

Memorability Metrics

  • 150k

    Page Views (PV)

  • 66.58

    Historical Popularity Index (HPI)

  • 44

    Languages Editions (L)

  • 7.99

    Effective Languages (L*)

  • 2.82

    Coefficient of Variation (CV)

Page views of Avempaces by language


Among astronomers, Avempace ranks 29 out of 531Before him are Charles Messier, Giuseppe Piazzi, Johannes Hevelius, Heinrich Wilhelm Matthias Olbers, Jamshīd al-Kāshī, and Roger Joseph Boscovich. After him are William Alfred Fowler, Johann Gottfried Galle, Fred Hoyle, Johann Bayer, Caroline Herschel, and Wilhelm Schickard.

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Among people born in 1080, Avempace ranks 3Before him are Pope Eugene III and Suger. After him are Norbert of Xanten, Isidore the Laborer, Theresa, Countess of Portugal, Matilda of Scotland, Fakhr al-Mulk Radwan, Abu Hamid al-Gharnati, Margaret Fredkulla, Sanai, and Raymond du Puy. Among people deceased in 1138, Avempace ranks 1After him are Bolesław III Wrymouth, Antipope Anacletus II, Irene Doukaina, Ar-Rashid, Moses ibn Ezra, and Vsevolod of Pskov.

Others Born in 1080

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Others Deceased in 1138

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In Spain

Among people born in Spain, Avempace ranks 136 out of 2,932Before him are Henry IV of Castile (1425), Ferdinand I of Naples (1423), James II of Aragon (1267), Alfonso VIII of Castile (1155), Carlos, Prince of Asturias (1545), and Almanzor (930). After him are Maria of Aragon, Queen of Portugal (1482), Josemaría Escrivá (1902), Ibn Hazm (994), Paco Rabanne (1934), Mariana Victoria of Spain (1718), and Peter IV of Aragon (1319).


Among astronomers born in Spain, Avempace ranks 1After him are Abū Ishāq Ibrāhīm al-Zarqālī (1029), Maslama al-Majriti (950), Nur ad-Din al-Bitruji (1200), Antonio de Ulloa (1716), and Josep Comas i Solà (1868).