摘要: On the homogeneous linear systems of differential equations with variable coefficients Minoru YAMAMOTO On the relations between the stability of linear systems and the charac-teristic roots of the coefficient matrix Yoshinori OKUNO and Minoru YAMAMOTO Above seven, communicated by K6saku YOSIDA, M. J. A. On the Deuring-Heilbronn phenomenon. II Yoichi MOTOHASHI Some remarks on Kodaira dimensions of fibre spaces. Takao FUJITA Algebraic threefolds with ample tangent bundle. Toshiki IIABUCHI On the acyclicity of free cobar constructions. I. Kazuhiko AOMOTO On the divisibility by 2 of the eigenvalues of Hecke operators Kazuyuki HATADA