{ "item_title" : "Unbounded Self-Adjoint Operators on Hilbert Space", "item_author" : [" Konrad Schmüdgen "], "item_description" : "This textbook provides a modern account of the theory of unbounded self-adjoint operators on Hilbert spaces and their spectral theory, with emphasis on applications in mathematical physics (Schrödinger operators) and analysis (Dirichlet and Neumann Laplacians, Sturm-Liouville operators, and the Hamburger moment problem). The new edition has been thoroughly revised and updated and features an extensive treatment of the self-adjoint extension theory of symmetric operators. In addition, a number of advanced special topics are presented at the textbook level, accompanied by numerous illustrative examples and exercises. The main themes of the book are: Basics of unbounded operators and fundamental self-adjointness criteria Spectral integrals, spectral theorems, and functional calculus for self-adjoint and normal operators Perturbations of self-adjointness and of the spectra of self-adjoint operators Forms and operators Boundary triplets The Krein transform and the Krein-Vishik-Birman theory of positive self-adjoint extensions With several updates and additions, this edition further enhances an established standard reference and accessible entry point to the subject. ", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/9/40/242/382/9402423826_b.jpg", "price_data" : { "retail_price" : "79.99", "online_price" : "79.99", "our_price" : "79.99", "club_price" : "79.99", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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