{"product_id":"9783764321857","title":"Selected Chapters in the Calculus of Variations (Lectures in Mathematics) (2003. 132 p.)","description":"\u003cp\u003eOn the other hand, Mather started with a specific class of area-preserving annulus mappings, the so-called monotone twist maps. These maps appear in mechanics as Poincare maps. In 1982, Mather succeeded to make essential progress in this field and to prove the existence of a class of closed invariant subsets which are now called Mather sets.\u003c\/p\u003e","brand":"BIRKH\u0026Auml;USER","offers":[{"title":"Default Title","offer_id":49662163255544,"sku":"00000_00000_00000_00000","price":107.69,"currency_code":"AUD","in_stock":true}],"url":"https:\/\/kinokuniya.com.au\/ja\/products\/9783764321857","provider":"Books Kinokuniya Australia","version":"1.0","type":"link"}