{"title":"Karen Oke","description":null,"products":[{"product_id":"reluctant-caregiver-book-karen-oke-9780971224063","title":"The Reluctant Caregiver","description":"These are the written notes of Fermi's Lectures supported by the Accademia Nazionale dei Lincei and given at the Scuola Normale Superiore of Pisa during March-April 1973. We propose to discuss here certain spectral properties of Schrdinger operators H=-D+V(x) (D the Laplacian and V a potential) which have application to scattering theory. We consider an operator H with potential V of class SR. We show that the positive point spectrum of H is a discrete set in R+. Eigenfunctions which correspond to positive eigenvalues are shown to decay rapidly. This property is shown to hold also for generalized eigenfunctions. We then establish the limiting absorbing principle, which is a basic tool in our study.","brand":"WoB","offers":[{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":49577223520529,"sku":"GOR013611116","price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":51009870430481,"sku":"NIN9780971224063","price":0.0,"currency_code":"GBP","in_stock":false},{"title":"US \/ GOOD \/ SBYB","offer_id":52762730791185,"sku":"CIN0971224064G","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/0971224064.jpg?v=1751077750"},{"product_id":"your-marriage-shift-book-karen-oke-9798987751770","title":"Your Marriage Shift","description":null,"brand":"WoB","offers":[{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":52110019854609,"sku":"GOR013916443","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/9798987751770.jpg?v=1757132193"}],"url":"https:\/\/www.worldofbooks.com\/en-gb\/collections\/author-books-by-karen-oke.oembed","provider":"World of Books ","version":"1.0","type":"link"}