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Ibn Sahl et al-Qūhī: Les projections. Addenda and corrigenda to: Géometrie et dioptrique au \(X^e\) siècle. (French) Zbl 0986.01006

The author notes a few new titles to be ascribed to lbn Sahl and gives text, translation, and commentary of two fragments of Ibn Sahl quoted by Al-Sijzī. The first shows the construction of a right triangle, given one side and the sum of the other two (by an ellipse and a circle.) The other one is the reconstruction of a sphere from its stereographic projection. In addition, there are a number of corrections and additions to the author’s book: Géométrie et dioptrique au Xème siècle (1993; Zbl 0946.01003).

MSC:

01A30 History of mathematics in the Golden Age of Islam

Biographic References:

Ibn Sahl; al-Qūhī

Citations:

Zbl 0946.01003
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