On total curvature of immersions and minimal submanifolds of spheres

Giovanni Rotondaro

Commentationes Mathematicae Universitatis Carolinae (1993)

  • Volume: 34, Issue: 3, page 459-463
  • ISSN: 0010-2628

Abstract

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For closed immersed submanifolds of Euclidean spaces, we prove that | μ | 2 d V V / R 2 , where μ is the mean curvature field, V the volume of the given submanifold and R is the radius of the smallest sphere enclosing the submanifold. Moreover, we prove that the equality holds only for minimal submanifolds of this sphere.

How to cite

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Rotondaro, Giovanni. "On total curvature of immersions and minimal submanifolds of spheres." Commentationes Mathematicae Universitatis Carolinae 34.3 (1993): 459-463. <http://eudml.org/doc/247484>.

@article{Rotondaro1993,
abstract = {For closed immersed submanifolds of Euclidean spaces, we prove that $\int |\mu |^2\, dV\ge V/R^2$, where $\mu $ is the mean curvature field, $V$ the volume of the given submanifold and $R$ is the radius of the smallest sphere enclosing the submanifold. Moreover, we prove that the equality holds only for minimal submanifolds of this sphere.},
author = {Rotondaro, Giovanni},
journal = {Commentationes Mathematicae Universitatis Carolinae},
keywords = {closed submanifold; total mean curvature; minimal submanifold; Willmore conjecture; total mean curvature},
language = {eng},
number = {3},
pages = {459-463},
publisher = {Charles University in Prague, Faculty of Mathematics and Physics},
title = {On total curvature of immersions and minimal submanifolds of spheres},
url = {http://eudml.org/doc/247484},
volume = {34},
year = {1993},
}

TY - JOUR
AU - Rotondaro, Giovanni
TI - On total curvature of immersions and minimal submanifolds of spheres
JO - Commentationes Mathematicae Universitatis Carolinae
PY - 1993
PB - Charles University in Prague, Faculty of Mathematics and Physics
VL - 34
IS - 3
SP - 459
EP - 463
AB - For closed immersed submanifolds of Euclidean spaces, we prove that $\int |\mu |^2\, dV\ge V/R^2$, where $\mu $ is the mean curvature field, $V$ the volume of the given submanifold and $R$ is the radius of the smallest sphere enclosing the submanifold. Moreover, we prove that the equality holds only for minimal submanifolds of this sphere.
LA - eng
KW - closed submanifold; total mean curvature; minimal submanifold; Willmore conjecture; total mean curvature
UR - http://eudml.org/doc/247484
ER -

References

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  1. Benson R., Euclidean Geometry and Convexity, Mc Graw-Hill, New York, 1966. Zbl0187.44103MR0209949
  2. Chen B.-Y., Total Mean Curvature and Submanifolds of Finite Type, World Scientific, Singapore, 1984. Zbl0537.53049MR0749575
  3. Chern S.S., Hsiung C.C., On the isometry of compact submanifolds in Euclidean space, Math. Ann. 149 (1962/63), 278-285. (1962/63) MR0148011
  4. Kühnel W., A lower bound for the i -th total absolute curvature of an immersion, Colloq. Math. 41 (1969), 253-255. (1969) MR0591931
  5. Reilly R., On the first eigenvalue of the Laplacian for compact submanifolds of Euclidean space, Comm. Math. Helv. 52 (1977), 525-533. (1977) Zbl0382.53038MR0482597
  6. Spivak M., A Comprehensive Introduction to Differential Geometry, Vol. I-V, Publish or Perish, Berkeley, 1970-1979. Zbl0439.53005MR0532830
  7. Weiner J.L., An inequality involving the length, curvature and torsions of a curve in Euclidean n -space, Pacific J. Math. 74 (1978), 531-534. (1978) Zbl0377.53001MR0478025
  8. Willmore T.J., Note on embedded surfaces, An. St. Univ. Iasi, s.I.a. Mat. 12B (1965), 493-496. (1965) Zbl0171.20001MR0202066
  9. Willmore T.J., Tight immersions and total absolute curvature, Bull London Math. Soc. 3 (1971), 129-151. (1971) Zbl0217.19001MR0292003
  10. Willmore T.J., Total Curvature in Riemannian Geometry, Ellis Horwood Limited, Chichester, 1982. Zbl0501.53038MR0686105

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