{"first_sentence": {"type": "/type/text", "value": "The earliest traces of the concept of square root of a negative number can be seen in Stereo M\u00e9trica of Heron of Alexandria, Arithmetica of Diophantus and Beeja Ganitha of Bhaskara."}, "physical_format": "Hardcover", "last_modified": {"type": "/type/datetime", "value": "2008-04-29 15:03:11.581851"}, "weight": "1.8 pounds", "languages": [{"key": "/l/eng"}], "publishers": ["Narosa"], "number_of_pages": 427, "isbn_13": ["9780849317088"], "id": 11181765, "edition_name": "2 edition", "isbn_10": ["0849317088"], "publish_date": "September 1, 2005", "key": "/b/OL8259265M", "authors": [{"key": "/a/OL2908654A"}], "title": "Complex Analysis, Second Edition", "type": {"key": "/type/edition"}, "subjects": ["Mathematics", "Science/Mathematics", "Mathematical Analysis", "Mathematics / Functional Analysis"], "physical_dimensions": "9.7 x 6.3 x 1.1 inches", "revision": 1}