{"product_id":"9784535790148","title":"n体問題と変分法","description":"相互作用するn個の物体の運動を扱う「n体問題」。力学における変分法を出発点に、8の字解を始め周期軌道の存在証明を解説する。","brand":"日本評論社","offers":[{"title":"Default Title","offer_id":48901076189488,"sku":"","price":3520.0,"currency_code":"JPY","in_stock":true}],"url":"https:\/\/www.maruzenjunkudo.co.jp\/products\/9784535790148","provider":"丸善ジュンク堂書店ネットストア","version":"1.0","type":"link"}