{"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":10.0,"currency_code":"USD","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":51009870430481,"sku":"NIN9780971224063","price":12.99,"currency_code":"USD","in_stock":false},{"title":"US \/ GOOD \/ SBYB","offer_id":52762730791185,"sku":"CIN0971224064G","price":11.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/0971224064.jpg?v=1751077750","url":"https:\/\/www.worldofbooks.com\/products\/reluctant-caregiver-book-karen-oke-9780971224063","provider":"World of Books ","version":"1.0","type":"link"}