On the duals of smooth projective complex hypersurfaces
Dimca, Alexandru 
(Université Côte d'Azur)
Ilardi, Giovanna 
(Universitá degli studi di Napoli Federico II. Dipartimento di Matematica e Applicazioni "R. Caccioppoli")
| Date: |
2024 |
| Abstract: |
We first show that a generic hypersurface V of degree d ≥ 3 in the projective complex space P n of dimension n ≥ 3 has at least one hyperplane section V ∩H containing exactly n ordinary double points, alias A1 singularities, in general position, and no other singularities. Equivalently, the dual hypersurface V ∨ has at least one normal crossing singularity of multiplicity n. Using this result, we show that the dual of any smooth hypersurface with n, d ≥ 3 has at least a very singular point q, in particular a point q of multiplicity ≥ n. |
| Rights: |
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| Language: |
Anglès |
| Document: |
Article ; recerca ; Versió publicada |
| Subject: |
Hypersurface ;
Dual hypersurface ;
Lefschetz properties ;
Hyperplane section ;
Singularities |
| Published in: |
Publicacions matemàtiques, Vol. 68 Núm. 2 (2024) , p. 431-438 (Articles) , ISSN 2014-4350 |
Adreça original: https://raco.cat/index.php/PublicacionsMatematiques/article/view/430118
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Record created 2024-07-05, last modified 2025-12-13