{"product_id":"9784320012448","title":"最大・最小","description":"周の長さが一定の平面図形から、最大面積をもつものを見つける、等周問題とよばれる著名な最大・最小値問題をテーマとして書かれた。","brand":"共立出版","offers":[{"title":"Default Title","offer_id":48445632020784,"sku":"","price":990.0,"currency_code":"JPY","in_stock":true}],"url":"https:\/\/www.maruzenjunkudo.co.jp\/products\/9784320012448","provider":"丸善ジュンク堂書店ネットストア","version":"1.0","type":"link"}