PAL

Ptolemaeus Arabus et Latinus

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Work C.1.29

Anonymous
⟨على الشكل الرابع من تاسعة المجسطي ⟨للعرضي
ʿAlā l-shakl al-rābiʿ min tāsiʿat al-Majisṭī 〈li-l-ʿUrḍī〉

An abridged version of a short note on the fourth proposition in Chapter IX.6 of the Almagest (for the original version, see C.1.20). It is included in two related witnesses in Oxford, which do not mention al-ʿUrḍī as the author. As is the case for other treatises in these two manuscripts, this abbreviation may very well go back to Quṭb al-Dīn al-Shīrāzī.

Text: [Oxford, BL, Thurston 3]

(108v) على الشكل الرابع من تاسعة المجسطي. ليكن الخطّ المارّ بالمراكز ابجد وا مركز البروج وب للمعدّل وج للمدير ونخرج بد به يحيطان مع جب بزاويتين متساويتين. — ولأنّ ل م قائمتان وبد به متساويان فيلزم تساوي ال ام وزانيتا دال هام. وذلك ما أردناه.

Bibl.: GAS VIFuat Sezgin, Geschichte des arabischen Schrifttums. Vol. VI: Astronomie bis ca. 430 H., Leiden: Brill, 1978, p. 94 (no. 31g) and p. 292 (Nachtrag zu S. 94).

Ed.: None.

MSS