List of Publications

1. On almost contact manifolds admitting axiom of planes or axiom of free mobility, Kodai Math. Sem. Rep. 16(1964)223-232
2. On fiberings of almost contact manifolds, Kodai Math. Sem. Rep. 17(1965)53-62
3. Some theorems on manifolds of constant curature, Proc. Japan Acad. 42(1966)1114-1117
4. On the geometry of G-structures of higher order, Proc. Japan Acad. 43(1967)193-224
5. Theory of conformal connections, Kodai Math. Sem. Rep. 19(1967)193-224
6. G-structures of higher order, Kodai Math. Sem. Rep. 19(1967)488-497
7. On almost contact structures, Kodai Math. Sem. Rep. 19(1967)498-506
8. (with M. Okumura) On cocomplex structures, Kodai Math. Sem. Rep. 19(1967)507-512
9. On invariant immersions, Ann. Mat. Pura Appl. 80(1968)387-398
10. G-structures defined by tensor fields, Kodai Math. Sem. Rep. 20(1968)54-75
11. On concurrent structures, Kodai Math. Sem. Rep. 20(1968)103-106
12. A remark on complex hypersurfaces of complex projective space, Kodai Math. Sem. Rep. 20(1968)509-511
13. Prolongations of pseudogroup structures to tangent bundles, Tohoku Math. J. 21(1969)84-91
14. Complex submanifolds of the complex projective space with the second fundamental form of constant length, Kodai Math. Sem. Rep. 21(1969)252-254
15. Complex hypersurfaces of a complex projective space, J. Diff. Geom. 3(1969)253-256
16. On compact complex submanifolds of the complex projective space, Tohoku Math. J. 22(1970)95-97
17. On complex hypersurfaces of the complex projective space II, J. Math. Soc. Japan 22(1970)495-498
18. Scalar curvature of complex submanifolds of a complex projective space, J. Diff. Geom. 5(1971)229-232
19. Differential geometry of algebraic manifolds, Diff. Geom. in honor of K. Yano, Kinokuniya, Tokyo, 1972, 355-372
20. Positively curved complex hypersurfaces immersed in a complex projective space, Tohoku Math. J. 24(1972)51-54
21. n-dimensional complex space forms immersed in {n+n(n+1)/2}-dimensional complex space forms, J. Math. Soc. Japan 24(1972)518-526
22. Positively curved complex submanifolds immersed in a complex projective space, J. Diff. Geom. 7(1972)603-606
23. Positively curved complex submanifolds immersed in a complex projective space II, Hokkaido Math. J. 1(1972)16-20
24. Differential geometry of algebraic manifolds (in Japanese), Sugaku 24(1972)37-46
25. On Kaehler immersions, Canad. J. Math. 24(1972)1178-1182
26. (with T. Itoh) Isotropic immersions, J. Diff. Geom. 8(1973)305-316
27. (with B.-y. Chen) On the scalar curvature and sectional curvatures of a Kaehler submanifold, Proc. Amer. Math. Soc. 41(1973)247-250
28. (with B.-y. Chen) Some characterizations of complex space forms, Duke Math. J. 40(1973)797-799
29. (with B.-y. Chen) Some extrinsic results for Kaehler submanifolds, Tamkang J. Math. 4(1973)207-213
30. (with B.-y. Chen) Some implications of the Euler-Poincar\'e characteristic for complete intersection manifolds, Proc. Amer. Math. Soc. 44(1974)1-8
31. Differential geometry of Kaehler submanifolds, Advances in Math. 13(1974)73-114
32. (with B.-y. Chen) On totally real submanifolds, Trans. Amer. Math. Soc. 193(1974)257-266
33. (with B.-y. Chen) Two theorems on Kaehler manifolds, Michigan Math. J. 21(1974)225-229
34. (with B.-y. Chen) A characterization of the complex sphere, Michigan Math. J. 21(1974)231-232
35. (with B.-y. Chen) Some implications of second Chern class for complete intersection manifolds, Tamkang J. Math. 6(1975)15-23
36. (with G. Ludden) On a holomorphic analogue of vanishing normal scalar curvature, Proc. Symposia in Pure Math. 27(1975)177-182
37. On Kaehler submanifolds, Proc. Symposia in Pure Math. 27(1975) 201-205
38. Generalized scalar curvatures of cohomological Einstein Kaehler manifolds, J. Diff. Geom. 10(1975)201-205
39. (with D. E. Blair) Geometry of integral submanifolds of a contact distribution, Illinois J. Math. 19(1975)269-276
40. (with T. Itoh) Isotropic immersions and Veronese manifolds, Trans. Amer. Math. Soc. 209(1975)109-117
41. (with B.-y. Chen) Complete intersection manifolds with extremal Euler-Poincar\'e characteristics, Proc. Amer. Math. Soc. 50(1975)121-126
42. (with B.-y. Chen) Some characterizations of complex space forms in terms of Chern classes, Quart. J. Math. 26(1975)459-464
43. (with B.-y. Chen) A characterization of complex space forms in terms of Bochner curvature tensor and Chern classes and its application, Indiana Univ. Math. J. 24(1975)1087-1091
44. (with B.-y. Chen) On compact Einstein-Kaehler manifolds, Proc. Amer. Math. Soc. 53(1975)176-178
45. (with D. E. Blair) Positively curved integral submanifolds of a contact distribution, Illinois J. Math. 19(1975)627-632
46. (with B -y. Chen) Positively curved Kaehler manifolds with constant generalized scalar curvature, Tamkang J. Math. 6(1975)277-279
47. Positively curved totally real minimal submanifolds immersed in a complex projective space, Proc. Amer. Math. Soc. 56(1976)264-266
48. (with H. Nakagawa) Complex space forms immersed in complex space forms, Trans. Amer. Math. Soc. 219(1976)289-297
49. (with B.-y. Chen), Compact Kaehler manifolds with constant generalized scalar curvature, J. Diff. Geom. 11(1976)317-319
50. Positiely curved complex submanifolds immersed in a complex projectie space III, J. Diff. Geom. 11(1976)613-615
51. Positiely curved complex submanifolds immersed in a complex projective space IV, Tsukuba J. Math. 3(1979)75-77
52. (with S. Tachibana) Les vari\'et\'e riemanniennes dont l'op\'erateur de courbure restreint est positif sont des sph\`eres d'homologie r\'eelle, C. R. Acad. Sc. Paris 289(1979)29-30
53. (with S. Tachibana) Kaehler manifolds of positive curvature operator, Proc. Amer. Math. Soc. 78(1980)548-550
54. (with R. Takagi) A geometric meaning of the rank of Hermitian symmetric spaces, Tsukuba J. Math. 5(1981)33-37
55. (with B.-y. Chen) On the spectrum of $\square^{1,1}$ on Kaehler manifolds, Archiv Math. 40(1983)367-371
56. (with R. Takagi) A submanifold which contains many extrinsic circles, Tsukuba J. Math. 8(1984)171-182
57. Some recent topics in the theory of submanifolds, Sugaku 39(1987) 305-319; Sugaku Expositions 4(1991)21-41
58. (with N. Takeuchi) A geometric construction of a torus which contains five circles through each point, Bull. Tokyo Gakugei Univ. 44(1992)15-18
59. (with N. Takeuchi) Hulahoop surfaces, J. Geom. 46(1993)127-132
60. (with T. Itoh) On real hypersurfaces of a complex projective space, Bull. Tech. Univ. Istanbul 46(1993)343-355
61. (with N. Takeuchi) A sphere can be characterized as an ovaloid which contains one circle through each point, J. Geom. 49(1994)163-165
62. (with S. O'Maeda) Geometry of submanifolds in terms of behavior of geodesics, Tokyo J. Math. 17(1994)347-354
63. (with S. O'Maeda) Characterizations of geodesic hyperspheres in a complex projective space by observing the extrinsic shape of geodesics, Math. Z. 225(1997)537-542
64. (with T. Adachi and S. O'Maeda) Extrisic shape of circles and the standard imbeddings of projective spaces, Manuscripta Math. 93(1997)267-272
65. (with T. Adachi and S. O'Maeda) Extrisic shape of circles and the standard imbedding of a Cayley projective plane, Hokkaido Math. J. 26(1997)411-419
66. (with H.-f. Sun) Minimal hypersurfaces of unit sphere, Tohoku Math. J. 49(1997)423-429
67. (with T. Itoh) On 3-dimensional isotropic submaniolds of a space form, Turkish J. Math. 22(1998)461-473