{"product_id":"hans-lewy-selecta-volume-2-von-david-kinderlehrer-hrsg","title":"Hans Lewy Selecta","description":"The work of Hans Lewy (1904--1988) has had a profound influence in \nthe direction of applied mathematics and partial differential \nequations, in particular, from the late 1920s.  Two of the particulars \nare well known. The Courant--Friedrichs--Lewy condition (1928), or CFL \ncondition, was devised to obtain existence and approximation results. \nThis condition, relating the time and spatial discretizations for \nfinite difference schemes, is now universally employed in the \nsimulation of solutions of equations describing propagation phenomena. \nLewy's example of a linear equation with no solution (1957), with its \nattendant consequence that most equations have no solution, was not \nmerely an unexpected fact, but changed the viewpoint of the entire \nfield. \n   Lewy made pivotal contributions in many other areas, for example, \nthe regularity theory of elliptic equations and systems, the Monge-- \nAmpSre Equation, the Minkowski Problem, the asymptotic analysis of \nboundary value problems, and several complex variables. He was among \nthe first to study variational inequalities. In much of his work, his \nunderlying philosophy was that simple tools of function theory could \nhelp one understand the essential concepts embedded in an issue, \nalthough at a cost in generality. This approach was extremely \nsuccessful. \n   In this two-volume work, most all of Lewy's papers are presented, \nin chronological order. They are preceded by several short essays \nabout Lewy himself, prepared by Helen Lewy, Constance Reid, and David \nKinderlehrer, and commentaries on his work by Erhard Heinz, Peter Lax, \nJean Leray, Richard MacCamy, Fran?ois Treves, and Louis Nirenberg. \nAdditionally, there are Lewy's own remarks on the occasion of his \nhonorary degree from the University of Bonn.\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9780817635244\"\u003e\u003ch3\u003eVolume 2\u003c\/h3\u003e\u003c\/div\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9781461274070\"\u003e\u003ch3\u003eVolume 2\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Hardcover - 9780817635244","offer_id":51091292230,"sku":"9780817635244","price":106.99,"currency_code":"EUR","in_stock":true},{"title":"Softcover - 9781461274070","offer_id":39415724605533,"sku":"9781461274070","price":106.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/f7b44e10-d2aa-41ae-ac2d-5f42ba991023.jpg?v=1771131726","url":"https:\/\/shop.autorenwelt.de\/products\/hans-lewy-selecta-volume-2-von-david-kinderlehrer-hrsg","provider":"Autorenwelt Shop","version":"1.0","type":"link"}