In this paper, we study Ghiyath al-Din Jamshid al-Kashi's (1380-1429 A.D.) main mathematical achievements. We discuss his al-Risala al-muhitiyya ("The Treatise on the Circumference"), Risala al-watar wa'l-jaib ("The Treatise on the Chord and Sine"), and Miftah al-hisab ("The Key of Arithmetic"). In particular, we look at al-Kashi's fundamental theorem, his calcula...

abstractmuhammad asif mohseni, a shia religious authority and an afghan political activist, has recently published the second printing of his al-mu’jam al-ahadith al-mu’tabarah in 8 volumes. a new arrangement has been adopted regarding the jurisprudential and non-jurisprudential chapters of the book, which indicates the author’s stance toward the status of reason and science as well as the posi...

The evaluation of texture as a function of recrystallization has been characterized for directly cold rolled Al-6Mg, Al-6Mg-0.4Sc and Al-6Mg-0.4Sc-0.2Zr alloys. Samples were annealed isothermally at 400 °C for 1 to 240 minutes to allow recrystallization. Recrystallization kinetics of the alloys is analyzed from the micro-hardness variation. Isothermally annealed samples of aluminum alloys were ...

considering the role of witness in the different sciences of language and literature and the importance of the muallaqat in arabic literature and the importance of explanations of these poems, in the present study, it is intended to study the method of commentators n applying the the different evidence of the quran, hadith, poetry, proverb, descriptive - analytical method was employed. the resu...

athir al-din al-abhari has a treatise bibliographies have called “thamani ‘ashra mas’ala fi al-kalam” (i.e., 18 problems in theology) or “al-mas’il” (i.e. the problems), but our findings show that its real name is “tahrir al-dalail fi taqrir al-masa’il” (i.e. the introduction of arguments for the establishment of the problems). the treatise, which is presumably his only writing in kalam, contai...

apart expressing the cause of the reflection of light from the surface of polished objects, ibn al-haytham in his al-manāẓir claims that the acceptance or rejection of light by these objects is only due to their polished surfaces and have nothing to do with their solidity, because the reflection of light from the surface of soft polished objects such as water is also possible. kamāl al-dīn al-f...