{"type":"product","schema_version":"1.0","item_id":"101737903766","canonical_url":"https://tw.bid.yahoo.com/item/101737903766","title":"Variational Methods for Strongly Indefinite Problems｜Ding 丁彥恆","subtitle":null,"condition":"近全新","currency":"TWD","observed_at":"2026-05-01T14:13:04.359Z","current_price":350,"original_price":null,"stock_status":"low_stock","available_quantity":1,"sold_quantity":0,"seller":{"id":"Y4762459297","name":"個人,售出不退買家負擔運送風險","positive_rate":null,"rating_count":null},"images":[{"url":"https://img.yec.tw/ob/image/274ccd38-7a78-41b0-85d7-fdd200fe6bd4.jpg","role":"main","alt":"商品主圖","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/dbd080b3-76ec-4a00-b3cc-dc844483c885.jpg","role":"detail","alt":"商品圖片 2","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/c51934c9-eb7b-4d83-a87d-47145bada5d7.jpg","role":"detail","alt":"商品圖片 3","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/a76fd7be-80a1-4914-92f6-c581d0cded8e.jpg","role":"detail","alt":"商品圖片 4","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/d5037d92-5bca-45ef-b2b5-017422641f13.jpg","role":"detail","alt":"商品圖片 5","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/74f9592a-d68c-48b4-ae4f-3a70a732676b.jpg","role":"detail","alt":"商品圖片 6","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/868659b4-7658-49d9-9650-3eca0f676a51.jpg","role":"detail","alt":"商品圖片 7","width":null,"height":null}],"description":"約2021年於台北的二手書店購入，2007年的書\n\n外觀保存如圖\n\n除蝴蝶頁一處有句作者丁彥恆教授送給前書主的贈言\n\n個人檢查內頁無發現畫線註記\n\n售出不退，請可接受者再下標\n\nISBN : 981-270-962-2\n\n Contents:\n\n- Lipschitz Partitions of Unity\n- Deformations on Locally Convex Topological Vector Spaces\n- Critical Point Theorems\n- Homoclinics in Hamiltonian Systems\n- Standing Waves of Non Schrödinger Equations\n- Solutions of Non Dirac Equations\n- Solutions of a System of Diffusion Equations\n\nThis unique book focuses on critical point theory for strongly indefinite functionals in order to deal with non variational problems in areas such as physics, mechanics and economics. With the original ingredients of Lipschitz partitions of unity of gage spaces (nonmetrizable spaces), Lipschitz normality, and sufficient conditions for the normality, as well as existence-uniqueness of flow of ODE on gage spaces, the book presents for the first time a deformation theory in locally convex topological vector spaces. It also offers satisfying variational settings for homoclinic-type solutions to Hamiltonian systems, Schrödinger equations, Dirac equations and diffusion systems, and describes recent developments in studying these problems. The concepts and methods used open up new topics worthy of in-depth exploration, and link the subject with other branches of mathematics, such as topology and geometry, providing a perspective for further studies in these areas. The analytical framework can be used to handle more infinite-dimensional Hamiltonian systems.\nReadership: Researchers and graduate students in analysis & differential equations, mathematical physics, geometry & topology, mechanics and control theory.","shipping_methods":[{"name":"郵局掛號","fee":0,"currency":"TWD"},{"name":"7-ELEVEN取貨付款","fee":0,"currency":"TWD"},{"name":"7-ELEVEN取貨不付款","fee":0,"currency":"TWD"},{"name":"面交/自取/不寄送","fee":0,"currency":"TWD"},{"name":"萊爾富取貨付款","fee":0,"currency":"TWD"}],"lowest_shipping_fee":null,"payment_methods":["ATM轉帳","萊爾富取貨付款","7-ELEVEN取貨付款"],"category_id":"2092095952","category_name":"理工醫","breadcrumb":[{"id":"3994318","name":"圖書/影音/文具","url":"/tw/%E5%9C%96%E6%9B%B8-%E5%BD%B1%E9%9F%B3-%E6%96%87%E5%85%B7-3994318-category.html"},{"id":"2092064185","name":"圖書與雜誌","url":"/tw/%E5%9C%96%E6%9B%B8%E8%88%87%E9%9B%9C%E8%AA%8C-2092064185-category.html"},{"id":"2092073405","name":"教育/考試用書","url":"/tw/%E6%95%99%E8%82%B2-%E8%80%83%E8%A9%A6%E7%94%A8%E6%9B%B8-2092073405-category.html"},{"id":"2092079015","name":"教科書","url":"/tw/%E6%95%99%E7%A7%91%E6%9B%B8-2092079015-category.html"},{"id":"2092095948","name":"大專/大學用書","url":"/tw/%E5%A4%A7%E5%B0%88-%E5%A4%A7%E5%AD%B8%E7%94%A8%E6%9B%B8-2092095948-category.html"},{"id":"2092095952","name":"理工醫","url":"/tw/%E7%90%86%E5%B7%A5%E9%86%AB-2092095952-category.html"}],"view_count":0,"watch_count":0,"hashtags":["變分法","丁彥恆"]}