{"product_id":"9781461272540","title":"The Four-Color Theorem: History, Topological Foundations, and Idea of Proof","description":"This book discusses a famous problem that helped to define the field now known as topology: What is the minimum number of colors required to print a map so that no two adjoining countries have the same color? This problem remained unsolved until the 1950s, when it was finally cracked using a computer. This book discusses the history and mathematics of the problem, as well as the philosophical debate which ensued, regarding the validity of computer generated proofs.","brand":"Springer New York","offers":[{"title":"Default Title","offer_id":47030981329136,"sku":"9781461272540","price":109.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9781461272540_p0.jpg?v=1763673151","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9781461272540","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}