Publications and Preprints

Preprint

Publications

1. Conformally flat immersions in codimension two, Geometriae Dedicata, vol. 23 (1987), 115 - 130.
2. (with Y. Baldin) Some complete manifolds with non-negative curvature operator, Math. Zeitschrift., vol. 195 (1987), 383 - 390.
3. Conformally flat immersions and flatness of the normal connection, Pacific J. of Math., vol. 195 (1989), 145 - 150.
4. Codimension two complete non-compact submanifolds with nonnegative curvature, Trans. Amer. Math. Soc., vol. 311 (1989), 739 - 748.
5. (with A. Derdzinski and F.Mercuri) Manifolds with pure nonnegative curvature operator, Boletim da Sociedade Brasileira de Matematica, vol. 18 (1987), 13 - 22.
6. A splitting theorem for complete manifolds with nonnegative curvature operator, Proc. Amer. Math. Soc., vol. 105 (1989), 979 - 985.
7. (with Y. Baldin) Codimension two product submanifolds with non-negative curvature, Note di Matematica (Italy), Vol.IX, 1 (1989), 463 - 469.
8. (with J.D. Moore ) Isometric Immersions with congruent Gauss maps, Proc. Amer. Math. Soc., vol. 110 (1990), 463 - 469.
9. Nonnegatively curved submanifolds in codimension two, Trans. Amer. Math. Soc., vol. (1992), 351 - 364.
10. A note on the first Betti number of submanifolds of nonnegative Ricci curvature in codimension two, Manuscripta Math., vol. 73 (1991), 335 - 339.
11. Some compact conformally flat manifolds with nonnegative scalar curvature, Geometriae Dedicata, vol. 47 (1993), 155 - 168.
12. Self-duality and four-manifolds with nonnegative curvature on totally isotropic two-planes, Michigan Math. Journal, vol. 41 (1994), 3 - 12.
13. (with F. Mercuri) On the topology of complete Riemannian manifolds with nonnegative curvature operator, Rendiconti seminario Facolta Scienze Universita Cagliari (Italy), Vol.63, (2) (1993), 1 - 23.
14. Some results on the topology of four-manifolds with nonnegative curvature, Illinois J. of Math., vol. 40 (1996), 390 - 401.
15. (with F. Mercuri) Low codimensional submanifolds with nonnegative isotropic curvature Trans. Amer. Math. Soc., vol. (1996) 2711 - 2724.
16. Some results on nonnegatively curved four manifolds, Matematica Contemporanea, vol. 9 (1995), 153 - 175.
17. (with A.Asperti and Helvecio de Castro) Compact homogeneous Einstein manifolds in codimension two, Note di Matematica (Italy) Vol. 6, (1) (1996), 9-19.
18. (with A. Asperti and F. Mercuri) Cohomogeneity one manifolds and hypersurfaces of revolution, Bolletino della Unione Matematica Italiana (7) 11-B (1997),199 -215.
19. Positively curved 4-manifolds and the nonnegativity of the isotropic curvatures, Michigan Math. J., vol. 44, (1997), 211 - 229.
20. (with F.Mercuri) Conformal flatness, cohomogeneity one and hypersurfaces of revolution, Differential Geometry and its Applications, vol. 9 (1998) 243-249.
21. (with Helvecio de Castro) Homogeneous submanifolds of codimension two, Geometriae Dedicata, vol. 78 (1999) 89-110.
22. (with Helvecio de Castro) Homogeneous manifolds in codimension two revisited, Note di Matematica, vol. 21, n. 1, (2002), 49-57.
23. (with Martha Dussan) Manifolds with 2-nonnegative Ricci operator, Pacific J. of Math. , vol. 204, No 2, (2002), 319 - 334.
24. (with Helvecio de Castro) Codimension two homogeneous submanifolds of Space Forms, Note di Matematica vol. 21, n. 2, (2003), 83-109.
25. (with Martha Dussan) Compact manifolds of nonnegative isotropic curvature and pure curvature tensor, Balkan Journal of Geometry and its Applications. vol. 10, n. 2, (2005).