Glen Van Brummelen –Heavenly Mathematics: The Forgotten Art of Spherical Trigonometry

Shortlisted for the 2013 BSHM Neumann Book Prize, British Society for the History of MathematicsThe British Society for the History of Mathematics (BSHM) has announced the winner of the 2013 Neumann Prize. This prize, named after Oxford mathematician and past BSHM President Dr. Peter Neumann, OBE, is awarded every two years for the best mathematics book containing historical material and aimed at a non-specialist readership.

To read more about the BSHM and this award,

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Spherical trigonometry was at the heart of astronomy and ocean-going navigation for two millennia. The discipline was a mainstay of mathematics education for centuries, and it was a standard subject in high schools until the 1950s. Today, however, it is rarely taught. *Heavenly Mathematics* traces the rich history of this forgotten art, revealing how the cultures of classical Greece, medieval Islam, and the modern West used spherical trigonometry to chart the heavens and the Earth. Glen Van Brummelen explores this exquisite branch of mathematics and its role in ancient astronomy, geography, and cartography; Islamic religious rituals; celestial navigation; polyhedra; stereographic projection; and more. He conveys the sheer beauty of spherical trigonometry, providing readers with a new appreciation for its elegant proofs and often surprising conclusions.

*Heavenly Mathematics* is illustrated throughout with stunning historical images and informative drawings and diagrams that have been used to teach the subject in the past. This unique compendium also features easy-to-use appendixes as well as exercises at the end of each chapter that originally appeared in textbooks from the eighteenth to the early twentieth centuries.

**Glen Van Brummelen** is coordinator of mathematics and the physical sciences at Quest University Canada and president of the Canadian Society for History and Philosophy of Mathematics. His books include *The Mathematics of the Heavens and the Earth: The Early History of Trigonometry* (Princeton) and *Mathematics and the Historian’s Craft*.