Variations on a Theme of Euler Quadratic Forms, Elliptic Curves, and Hopf Maps

From a review of the Japanese-language edition: ' A beautifully written book...The statement of the problem is very clear-that is, [the author] claims that one aspect of classical and modern number theory can be considered as the number theory of Hopf maps-and then he solves this problem....skillfully and perspectively organized...This book will be a good introductory textbook...There has never been a textbook similar to this....I highly recommend this book. ' Michio Kuga, Professor, late of State University of New York at Stony BrookOno, Takashi is the author of 'Variations on a Theme of Euler Quadratic Forms, Elliptic Curves, and Hopf Maps', published 1994 under ISBN 9780306447891 and ISBN 0306447894.