{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Variations on a Theme of Euler: Quadratic Forms, Elliptic Curves, and Hopf Maps (University Series in Mathematics)","author_name":"Takashi Ono","thumbnail_url":"https://www.ebooknetworking.net/books/030/644/big0306447894.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0306447894.html\">Variations on a Theme of Euler: Quadratic Forms, Elliptic Curves, and Hopf Maps (University Series in Mathematics)</a>","width":400,"height":300}