{ "item_title" : "Numerical Ranges of Operators on Normed Spaces and of Elements of Normed Algebras", "item_author" : [" F. F. Bonsall", "J. Duncan", "N. J. Hitchin "], "item_description" : "The theory of the numerical range of a linear operator on an arbitrary normed space had its beginnings around 1960, and during the 1970s the subject has developed and expanded rapidly. This book presents a self-contained exposition of the subject as a whole. The authors develop various applications, in particular to the study of Banach algebras where the numerical range provides an important link between the algebraic and metric structures.", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/0/52/107/988/0521079888_b.jpg", "price_data" : { "retail_price" : "69.00", "online_price" : "69.00", "our_price" : "69.00", "club_price" : "69.00", "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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