{"product_id":"four-colours-suffice-book-robin-j-wilson-9780141009087","title":"Four Colours Suffice","description":"A book to celebrate the 150th anniversary of the solution to one of the world's most puzzling mathematical problems. The four-colour theorem states that every map in the world can be coloured with just four colours in such a way that neighbouring countries have different colours. One of the simplest problems to state, one of the hardest to solve, which took a century for mathematicians to prove. This book introduces the mathematicians behind the mathematics, among them a bishop, an astronomer, a botanist, an obsessive golfer and a bridegroom who spend his honeymoon colouring maps.","brand":"WoB","offers":[{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":49582648426769,"sku":"GOR001263905","price":10.0,"currency_code":"USD","in_stock":true},{"title":"GB \/ GOOD \/ INTERNAL","offer_id":49629266575633,"sku":"GOR002345885","price":10.0,"currency_code":"USD","in_stock":true},{"title":"GB \/ WELL_READ \/ INTERNAL","offer_id":53577367388433,"sku":"GOR002392948","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/014100908X.jpg?v=1751355713","url":"https:\/\/www.worldofbooks.com\/products\/four-colours-suffice-book-robin-j-wilson-9780141009087","provider":"World of Books ","version":"1.0","type":"link"}