訂正日: 2006/09/26訂正理由: -訂正箇所: 論文サブタイトル訂正内容: Wrong : To Professor Shokichi Iyanaga for the congraturation of his 60th birthday
訂正日: 2006/09/26訂正理由: -訂正箇所: 引用文献情報訂正内容: Right : [1] M. Eichler, Zur Zahlentheorie der Quaternionen-Algebren, J. Reine Angew. Math., 195 (1955), 127-151. [2] M. Eichler, Über die Idealklassenzahl total definiter Quaternionenalgebren, Math. Z., 43 (1938), 102-109. [3] T. Hayashida and M. Nishi, Existence of curves of genus two on a product of two elliptic curves, J. Math. Soc. Japan, 17 (1965), 1-16. [4] T. Hayashida, A class number associated with a product of two elliptic curves, Nat. Sci. Rep. Ochanomizu Univ., 16 (1965), 9-19. [5] V. Korínek, Kvadratická telesa v kvaternionových okruích, Vest. Král. Ceske Spol. Nauk, Tr. II, 1930, 1-46. [6] M. Nishi, Some results on abelian varieties, Nat. Sci. Rep. Ochanomizu Univ., 9 (1958), 1-12. [7] A. Weil, Zum Beweis des Torellischen Satzes, Nachr. Akad. Wiss. Göttingen Math. -Phys. Kl., (1957), 33-53.