{"product_id":"9781614274711","title":"Introduction to Hilbert Space and the Theory of Spectral Multiplicity","description":"2013 Reprint of 1951 Edition. Full facsimile of the original edition, not reproduced with Optical Recognition Software. The subject matter of the book is funneled into three chapters: [1] The geometry of Hubert space; [2] the structure of self-adjoint and normal operators; [3] and multiplicity theory for a normal operator. For the last, an expert knowledge of measure theory is indispensable. Indeed, multiplicity theory is a magnificent measure-theoretic tour de force. The subject matter of the first two chapters might be said to constitute an introduction to Hilbert space, and for these, an a priori knowledge of classic measure theory is not essential. Paul Richard Halmos (1916-2006) was a Hungarian-born American mathematician who made fundamental advances in the areas of probability theory, statistics, operator theory, ergodic theory, and functional analysis (in particular, Hilbert spaces). He was also recognized as a great mathematical expositor.","brand":"Martino Fine Books","offers":[{"title":"Default Title","offer_id":47018593059056,"sku":"9781614274711","price":8.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9781614274711_p0.jpg?v=1763851672","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9781614274711","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}