{"product_id":"untitled-jul9_23-45-41","title":"An Imaginary Tale: The Story of √−1 — Paul J. Nahin","description":"\u003cp\u003e\u003cspan\u003enumerical example of how to calculate the volume of a truncated square pyramid, which implied the need for \u003c\/span\u003e\u003cspan class=\"a-text-italic\"\u003ei\u003c\/span\u003e\u003cspan\u003e. In the first century, the mathematician-engineer Heron of Alexandria encountered \u003c\/span\u003e\u003cspan class=\"a-text-italic\"\u003eI\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003ein a separate project, but fudged the arithmetic; medieval mathematicians stumbled upon the concept while grappling with the meaning of negative numbers, but dismissed their square\u003c\/span\u003e\u003c\/p\u003e","brand":"Book Lovers BD","offers":[{"title":"Paperback","offer_id":55318103097635,"sku":null,"price":330.0,"currency_code":"BDT","in_stock":true},{"title":"Hardcover","offer_id":55318103130403,"sku":null,"price":460.0,"currency_code":"BDT","in_stock":true},{"title":"eBook","offer_id":55318103163171,"sku":null,"price":150.0,"currency_code":"BDT","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/5872\/2083\/files\/rn-image_picker_lib_temp_6cc7fb8b-9da0-44e5-996d-49f4bb290a3d.jpg?v=1783620754","url":"https:\/\/www.bookloversbd.shop\/products\/untitled-jul9_23-45-41","provider":"Book Lovers BD","version":"1.0","type":"link"}