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From Samarqand to Jaipur: Evolving al-Kashi’s Approximation to the Sine of One Degree

By (author) Clemency Montelle, By (author) Kim Plofker, By (author) Glen Van Brummelen

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Calculating the sine of one degree, not possible with the tools of geometry alone, was a problem approached frequently in various ways in Hellenistic, Arabic, Persian, and European trigonometry. This book situates the problem and the iterative techniques often used to solve it in the context of Indian trigonometry, focusing on the Sanskrit text and manuscript that form the main subject of this study: theÂ jyÄcÄpa section of the SiddhÄntakaustubha of JagannÄtha. This text describes the approaches of JamshÄ«d al-KÄshÄ« and Ulugh Beg of 15th-century Samarqand, and also includes innovations produced by astronomers of Jai Singhâ€™s court in Jaipur. This book contains translations and editions of two recensions of the manuscript's surviving prose texts, along with analyses of its mathematical content. The authors also traceÂ the textual history of the mathematical methods in both Islamic and Sanskrit mathematical traditions. Of timely interest to scholars in the history of early modern Islamic and Indian mathematical sciences, this book contributes an important text to the literature on the interactions between these cultures.

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Helgoland: The Strange and Beautiful Story of Quantum Physics

Carlo Rovelli
Paperback / softback
208 pages
was: R 295.95
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The Order of Time

Carlo Rovelli
Paperback / softback
224 pages
was: R 295.95
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Originally published in Italian: L'ordine del tempo (Milan: Adelphi Edizioni, 2017).

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The Coming Wave: AI, Power and Our Future

Mustafa Suleyman
Paperback / softback
352 pages
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now: R 265.95
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