A_2-singularities of hypersurfaces with non-negative sectional curvature in Euclidean space
Abstract
In a previous work, the authors gave a definition of `front bundles'. Using this, we give a realization theorem for wave fronts in space forms, like as in the fundamental theorem of surface theory. As an application, we investigate the behavior of principal singular curvatures along A_2-singularities of hypersurfaces with non-negative sectional curvature in Euclidean space.
Keywords
Cite
@article{arxiv.1011.1544,
title = {A_2-singularities of hypersurfaces with non-negative sectional curvature in Euclidean space},
author = {Kentaro Saji and Masaaki Umehara and Kotaro Yamada},
journal= {arXiv preprint arXiv:1011.1544},
year = {2010}
}
Comments
17 pages. This paper consits of the contents of sect. 2 & 3 in the ver. 1 & 2 of "The intrinsic duality of wave fronts" (arXiv:0910.3456) by the same authors, which are removed from the older version. The paper arXiv:0910.3456 are revised as "Coherent tangent bundles and Gauss-Bonnet formulas for wave fronts (arXiv:0910.3456v3), which will be published in "Journal of Geometric Analysis"