{"product_id":"introduction-to-hilbert-space-and-the-theory-of-spectral-multiplicity-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.\u003cbr\u003e","brand":"Martino Fine Books","offers":[{"title":"Default Title","offer_id":50421704032530,"sku":"9781614274711","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/4771\/8930\/files\/img_305270a0-4ad6-454a-a9dd-415f164ef176.jpg?v=1737115036","url":"https:\/\/surprise-castle.myshopify.com\/products\/introduction-to-hilbert-space-and-the-theory-of-spectral-multiplicity-9781614274711","provider":"Surprise Castle","version":"1.0","type":"link"}