訂正日: 2006/10/20訂正理由: -訂正箇所: 引用文献情報訂正内容: Right : [1] S. Bochner, Vorlesungen über Fouriersche Integrale, Leipzig, 1932. [2] S. Bochner and S. Izumi, Some general convergence theorems, Tôhoku Math. J., 42 (1936). [3] S. Izumi, A general convergence theorem, Proc. Imp. Acad. Japan, XI (1935). [4] T. Kawata, Some convergence theorems for stationary processes, Ann. Math. Statist., 30 (1959), 1192-1214. [5] T. Kawata, Fourier analysis of nonstationary stochastic processes, Trans. Amer. Math. Soc., 118 (1965), 276-302. [6] M. A. Kranosel'skii and Ya. B. Rutickii, Convex functions and Orlicz spaces, Noordhoff, Groningen, 1961.