訂正日: 2006/08/29訂正理由: -訂正箇所: 引用文献情報訂正内容: Right : [1] N. H. Kuiper and K. Yano, Two algebraic theorems with applications, Proc. Acad. Amsterdam, 59, (Indag. Math., 18), (1956), 319-328. [2] T. Fukami, Invariant tensors under the real representation of unitary group and their applications, (1958). This Journal, 10 (1958), 135-144. [3] H. Weyl, Classical proups, Princeton, 1939. [4] Séminaire “Sophus Lie”, l'année, 1954/1955, Ecole Normale Supérieure, (1955).