{"product_id":"9780486159485","title":"The Absolute Differential Calculus: Calculus of Tensors","description":"A chief requirement in the study of relativity is absolute differential calculus, which Einstein used to mathematically develop his ideas. This classic was written by a founder in the field, offering a clear, detailed exposition. It examines introductory theories, the fundamental quadratic form and the absolute differential calculus, and physical applications. 1926 edition.","brand":"Dover Publications","offers":[{"title":"Default Title","offer_id":47119922266352,"sku":"9780486159485","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9780486159485_p0.jpg?v=1763708563","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9780486159485","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}