{ "item_title" : "Proofs of Mathematical Problems ( Book 3 )", "item_author" : [" Xu Feng "], "item_description" : "In the Book 3, it includes: Problem 1) On the P versus NP; Problem 2) On the Jacobian Conjecture; Problem 3) On the Hilbert's 16th Problem; Problem 4) On the Hadamard Conjecture; Problem 5) On the Yang-Mills Existence and Mass Gap.", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/1/52/296/928/1522969284_b.jpg", "price_data" : { "retail_price" : "15.00", "online_price" : "15.00", "our_price" : "15.00", "club_price" : "15.00", "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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