Takahashi, Y. 1957 Scholar; 1958-59 Assistant Professor; 1960 Professor Born 1924 Osaka, Japan. D.Sc. 1954 Nagoya, Japan. Appointments: Prof., Alberta 1968-92; Emeritus Prof., Alberta, 1992-.Memberships: Royal Irish Academy. Honours: Fellow, American Physical Society; Fellow, Royal Society of Canada. Address: 456 Buchanan Road, Edmonton, Alberta, Canada T6R 2A6. E-mail: takahashi_at_phys.ualberta.ca