Rāshīkāt al-Hind : Tanāsub nazd-i Hindiyān /

: Abū Rayḥān al-Bīrūnī (d. after 442/1050) is one of the greatest scholars in the history of Islam. A native of Kāth, capital of Khwārazm, he wrote on subjects ranging from mathematics, geography, astronomy and natural science to history, linguistics and ethnography. He was a student of, among others, the astronomer-mathematicians Kushyār b. Labbān (fl. 390/1000) and Abū Maḥmūd al-Khujandī (d. 390/1000). He also met and corresponded with Avicenna (d. 428/1037). As was common for a scholar of his rank in those days, he spent his life in the entourage of powerful rulers, in Khwārazm, Khurāsān, and Sidjistān. It was at the court of Maḥmūd b. Sebüktigin (d. 421/1030) and his sucessors in Ghazna that he accompanied Maḥmūd on his campaigns to north-west India. It is there that he got acquainted with Indian methods in the arithmetic of proportions and ratios, the subject of this book. Arabic text with a Persian translation by the editor.
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