the first part of the paper describes the persian translation of naṣīr al-dīn al-ṭūsī’s taḥrīr kitāb uqlīdis by quṭb al-dīn al-shīrāzī, with a primary focus on his appendix to book i. part of a larger encyclopedic collection, al-shīrāzī’s translation continued to be read for centuries. as evidence of the work’s influence, al-shīrāzī’s appendix to book i was included in a nineteenth century prin...

this article examines al-ṭūsī’s and maghribī’s recensions of theodosius’ sphaerica by comparing their features and differences. al-ṭūsī adheresto the original text of sphaerica, however, by adding some postulates and three lemmas, he enriches the mathematical structure of the treatise. al-ṭūsī’s composition style reveals that he intended to prepare a pedagogical textbook, his statements are con...

athir al-din abhari is one of the most outstanding logicians of the islamic period, even though he is less known to contemporary scholars than other logicians. this article, by presenting an edition of al-risalat al-zahirah (the shining treatise), not only makes available for the first time in print an important text in the field of logic, but also surveys some of abhari's logical thought ...

This paper contains an analysis and appreciation of one of Moses Maimonides' authentic medical works, his Treatise on Asthma. After a brief biographical section, passages from the work are cited and analysed to illustrate the approach of this medieval physician who organised the knowledge of Greeks and others who preceded him. Maimonides presents a logical and systematic approach to the prevent...

having briefly been reviewed the historical process of changing the formulae for determining the times of islamic prayers, two newly found formulae and a new rule for establishing the times of prayers would be discussed. these matters have been exploited from four texts, still preserved as manuscript: (1) siyyid ¾?y? al-d?n sh?shtar?’s ¼ad b?b dar macrifa al-a½??rl?b, (2) b?r?n?’s ’ist?c?b f? c...