Mathematical Papers
  1. Eigenvalues and eigenfunctions of the Laplacian on a Riemannian manifold, J. Northeast Univ. Tech. 8(1987), 520-526
  2. Complete hypersurface minimally immersed in a unit sphere, Mem. Fac. Sci. Kyushu Univ. Ser. A, 43 (1989), 7-13
  3. (with Y.D.Wang) Complete Riemannian manifolds minimally immersed in $S^{n+p}(1)$, Tsukuba J. Math., 10 (1989), 107-112
  4. Complete minimal hypersurfaces in $S^4(1)$ with constant scalar curvature, Osaka J. Math., 27 (1990), 885-892
  5. (with H. Nakagawa) Totally umbilical hypersurfaces, Hiroshima J. Math., 20 (1990), 1-10
  6. Complete space-like hypersurfaces in a de Sitter space with r=kH, Mem. Fac. Sci. Kyushu Univ. Ser. A, 44 (1990), 67-77
  7. Complete space-like hypersurfaces of a de Sitter space with constant mean curvature, Tsukuba J. Math. 14 (1990), 353-370
  8. Eigenvalues and eigenfunctions in quasi-Einsteinian manafolds, J. Northeast Univ. Tech. 11(1990), 75-80
  9. Properties of hypersurfaces in quasi-Einsteinian manifolds, Chinese Quarterly J. Math. 5(1990), 109-110
  10. Minimal submanifolds in a sphere, J. Northeast Univ. Tech. 12(1991), 206-212
  11. Minimal hypersurfaces in spheres, J. Northeast Univ. Tech. 12(1991), 421-427
  12. Complete space-like submanifolds in a de Sitter space with parallel mean curvature, Math. Z., 206 (1991), 333-339
  13. (with H.C. Yang) A note on the pinching constant of minimal hypersurfaces with constant scalar curvature in the unit sphere, Chinese Sci. Bull., 36 (1991), 1-6
  14. Complete hypersurfaces with constant mean curvature in space form of quasi-constant curvature, Chinese Quarterly J. Math. 6(1991) 324-329
  15. Complete hypersurfaces with constant mean curvature in space form of quasi-constant curvature, Chinese Quarterly J. Math. 6(1991) 324-329
  16. Complete totally real minimal submanifolds in a complex projective space, Mem. Fac. Sci. Kyushu Univ. Ser. A, 3 (1992), 93-103
  17. (with B.Jiang) 3-dimensional submanifolds of spheres with constant mean curvature, Tsukusa J. Math., 16 (1992), 321-334
  18. (with R.Aiyama) Complete space-like hypersurfaces in a Lorentz space form of dimension 4, Kodai J. Math., 15 (1992), 375-386
  19. (with B.Q.Wu) The generalized maximum principle and conformally flat spaces, Northeastern J. Math., 7 (1992), 53-57
  20. Submanifolds with parallel mean curvature vector in a sphere,J. Northeast Univ. Tech. 13(1992), 193-199
  21. Estimates of eigenvalues of elliptic operators, J. Northeast Univ. Tech. 13(1992), 306-312
  22. Complete spacelike hypersurfaces of Lorents space, Chinese Quaterly J. Math. 7(1992) 254-262.
  23. Complete hypersurfaces in a 4-dimensional unit sphere with constant mean curvature, Yokohama Math. J., 39(1992),125-139
  24. A characterization of complete Riemannian manifolds minimally immersed in the unit sphere, Nagoya Math. J., 131 (1993), 127-133
  25. A characterization of compact minimal hypersurfaces of in a unit sphere, Bull. Austral. Math. Soc., 49 (1993), 223-226
  26. The classification of complete hypersurfaces with constant mean curvature of space form of dimension 4, Mem. Fac. Sci. Kyushu Univ. Ser. A, 47 (1993), 79-101 and 48(1994) 441
  27. Hypersurfaces of $S^4(1)$ with constant quasi-Gauss-Kronecker curvature, Chinese Adv. Math., 22 (1993), 125-131
  28. (with X.R.Wan) Hypersurfaces of space form $M^4(c)$ with constant mean curvature, Lecture notes 2, First MSJ International Research Institute on Geometry and Global Analysis, Japan 1993, 327-347
  29. (with S. Choi) Complete space-like submanifolds with parallel mean curvature vector of an indefinite space form, Tsukuba J. Math., 17(1993), 497-512
  30. Complete maximal spacelike hypersurfaces of $H_1^4(c)$, Manuscripta Math., 82 (1994), 149-160
  31. Hypersurfaces of a Lorentz space form, Arch. Math., 63 (1994), 271-281
  32. (with H.C.Yang) An estimates of the pinching constant of minimal hypersurfaces with constant scalar curvature in unit sphere, Manuscripta Math., 84 (1994), 89-100
  33. (with X.R.Wan) Complete hypersurfaces of space form $R^4$ with constant mean curvature, Mh. Math., 118(1994), 171-204
  34. Space-like surfaces of an anti-de Sitter space Colloqu. Math., 56 (1994), 101-108
  35. Nonexistence of integral currents, Ann. of Global Analysis and Geometry, 13 (1995), 197-205
  36. Stable complete and noncompact hypersurfaces with constant mean curvature, Kyushu J. Math., 49(1995), 56-66
  37. The rigidity of Clifford torus $S^1(\sqrt{\frac1n})\times S^{n-1}( \sqrt{\frac{n-1}n})$, Comment. Math. Helv. 71(1996), 60-69
  38. Minimal hypersurfaces in a sphere, Proceeding of the First International Workshop on Differential Geometry, Kyungpook National University, Korea, December 1996, p.79-98
  39. (With K.Shiohama) Nonexistence of integral currents II, Kyushu J. Math. 51(1997), 149-164
  40. (With S. Ishikawa) Complete maximal spacelike submanifolds, Kodai Math. Jour. 20(1997), 208-217
  41. (With H.C.Yang) Chern's Conjecture on minimal hypersurfaces, Math. Zeit., 227(1998), 377-390
  42. (With S. Ishikawa) Space like hypersurfaces in de Sitter spaces with constant scalar curvature, Manuscripta Math. 95(1998), 499-505
  43. (With Y. Machigashira and Y. Sugioka) The relation between degree and dilation of continuous maps, Japanese Math. Jour. 24(1998), 183-190
  44. (With S. Ishikawa) A Characterization of the Clifford torus, Proc. Amer. Math. Soc., 127(1999), 819-828
  45. (With S. Ishikawa and K. Shiohama) Conformally flat 3-manifolds with constant scalar curvature, J. Math. Soc. Japan, 51(1999), 209-226
  46. Complete maximal sapcelike surfaces in an anti-de Sitter space $H^4_2(c)$ , Glasgow Math. J., 42(2000), 139-156
  47. (With S. Ishikawa and K. Shiohama) Conformally flat 3-manifolds with constant scalar curvature II, to appear in J. Japanese Math., (2000),
  48. Compact locally conformally flat Riemannian manifolds, to appear in the Bulletin of the London Mathemathical Society
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