Mathematical Instrumentation in Fourteenth-Century Egypt and by Francois Charette

By Francois Charette

This quantity includes the severe version with English translation of a richly-illustrated Arabic treatise at the development of over a hundred quite a few astronomical tools, lots of that are another way unknown to experts. It was once composed by means of Najm al-Din al-Misri, a slightly shadowy determine, in Cairo, c.1330. The version is observed by way of a close technical and historic observation, that is framed as a self-standing essay on Islamic mathematical instrumentation. whereas this essay/commentary is principally in keeping with Najm al-Din's treatise, it additionally advantages from the session of a giant variety of formerly unstudied manuscripts, and features a dialogue of all appropriate assets from the interval 800-1500.

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Additional info for Mathematical Instrumentation in Fourteenth-Century Egypt and Syria: The Illustrated Treatise of Najm Al-Din Al-Misri (Islamic Philosophy, Theology, and Science)

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111 See Charette 1998, p. 28. 107 INTRODUCTION 25 2. a¯ r almaq¯ala f¯ı ma ֒rifat al-awq¯at bi-ghayr a¯ la (Abridgement of the treatise on finding the prayer times without an instrument), divided into 21 b¯abs, and preserved in MS Istanbul Hamidiye 1453, ff. 112. On ff. r¯ır al-maq¯ala f¯ı ma ֒rifat al-awq¯at bi-ghayr a¯ la, which appears, however, to be by a different author (but also Egyptian, since he discusses the Coptic calendar). Despite their titles, which seem to imply that they derive from a common source, both texts are in fact independent.

C61. 97 Suter, MAA, no. 445 (and “Nachträge”); Brockelmann, GAL, II, pp. 216, 468 and Suppl. II, pp. 215–217, 468; King, Survey, no. C97. 98 These traditions are now well documented: see the surveys of Islamic folk astronomy in Varisco 2000 and King 1993d. 5) pertaining to a hybrid form of folk and mathematical astronomy. Also, the contents of Ch. 91 of his instrument treatise edited in the present study can likewise be characterised as a hybrid product of both traditions. 2 Exact versus approximate methods Problems solved with the methods of folk astronomy are, from perspective of mathematically-trained scholars, necessarily inaccurate, if not inexact.

13. 83 King 1983a, p. 540. 6. 84 Preserved in MS Dublin CB 4090, 53 ff. 85 His treatise on the shakk¯ az¯ı quadrant was composed in 760 H [= 1358/9]: see MS Manchester Rylands 361, ff. 56r–57v. 86 His mark of ownership can be read on the title-page of al-Marr¯ akush¯ı, J¯ami ֒, I, p. 1. 87 The orthography Baklam¯ısh¯ı is also attested: see King, Fihris, I, sub DM 774, and Ha . un¯un, I, col. 866–867. 88 On his works, see Brockelmann, GAL, II, pp. 168–169 and Suppl. II, p. 167; King, Survey, no.

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