{"product_id":"9781631177071","title":"High Order Boundary Value Problems","description":"The motto for all the results presented in this book is the lower and upper solution method. In short, this method can guarantee not only the existence of a solution for a given boundary value problem but also the location of the solution in a strip defined by the lower and the upper solutions. Therefore, the challenge of finding a solution for a boundary value problem is replaced by the search of two functions (well-ordered, in reversed order or non-ordered) satisfying adequate differential inequalities and boundary conditions. The freedom to choose such functions is at the same time its weakness: lower and upper solutions must be defined and exhibited.","brand":"Nova Science Publishers, Inc (US)","offers":[{"title":"Default Title","offer_id":65433083937117,"sku":null,"price":63.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1041\/3893\/2573\/files\/9781631177071.jpg?v=1789249307","url":"https:\/\/shop.gazellebookservices.co.uk\/products\/9781631177071","provider":"Gazelle Book Services","version":"1.0","type":"link"}